AP2125
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AP2125
300mA, HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
Description
The AP2125 series are 300mA, positive voltage regulator ICs
fabricated by CMOS process.
Each of these ICs is equipped with a voltage reference, an error
amplifier, a resistor network for setting output voltage, a chip enable
circuit, a current limit circuit and OTSD (over temperature shut down)
circuit to prevent the IC from over current and over temperature.
The AP2125 series have features of high ripple rejection, low dropout
voltage, low noise, high output voltage accuracy and low current
consumption which make them ideal for use in various battery-
powered apparatus.
The AP2125 have 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.15V and 4.2V fixed
voltage versions.
These ICs are available in tiny SC-70-5 packages as well as industry
standard SOT-23-3 and SOT-23-5 packages.
Features
Excellent Ripple Rejection: 70dB Typical (1.8V Version)
Low Dropout Voltage: 65mV (IOUT=100mA, 3.3V Version)
Low Standby Current: 0.01µA Typical
Low Quiescent Current: 60µA Typical
Extremely Low Noise: 50µVrms Typical
Maximum Output Current: 300mA (Min.)
High Output Voltage Accuracy: ±2%
Compatible with Low ESR Ceramic Capacitor
Excellent Line/Load Regulation
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(Top View)
SOT-23-3
(Top View)
SOT-23-5/SC-70-5
Applications
CDMA/GSM Cellular Handsets
Battery-powered Equipments
Laptops, Palmtops, Notebook Computers
Hand-held Instruments
PCMCIA Cards
Portable Information Appliances
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
3
2
1
VIN
GND VOUT
AP2125
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AP2125
Typical Applications Circuit
Pin Descriptions
Pin Number
Pin Name
Function
SOT-23-3
SOT-23-5/SC-70-5
3
1
VIN
Input voltage
1
2
GND
Ground
–
3
CE
Active high enable input pin. Logic high=enable, logic low =
shutdown
–
4
NC
No connection
2
5
VOUT
Regulated output voltage
AP2125
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AP2125
Functional Block Diagram
3
1
5
2
SOT-23-3 SOT-23-5/SC-70-5
Absolute Maximum Ratings (Note 4)
Symbol
Parameter
Value
Unit
VIN
Input Voltage
6.5
V
VCE
Enable Input Voltage
-0.3 to VIN +0.3
V
IOUT
Output Current
450
mA
TJ
Junction Temperature
+150
ºC
TSTG
Storage Temperature Range
-65 to +150
ºC
TLEAD
Lead Temperature (Soldering, 10sec)
+260
ºC
θJA
Thermal Resistance
SOT-23-3
200
ºC/W
SOT-23-5
200
SC-70-5
300
ESD
ESD (Human Body Model)
6000
V
ESD
ESD (Machine Model)
400
V
Note 4: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied.
Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol
Parameter
Min
Max
Unit
VIN
Input Voltage
VOUT+0.5V
6
V
TA
Operating Ambient Temperature Range
-40
+85
ºC
AP2125
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AP2125
Electrical Characteristics
AP2125-1.8 Electrical Characteristics (@VIN = 2.8V, TA = +25oC, CIN = 1µF, COUT = 1µF, Bold typeface applies over -40oC ≤
T
J ≤ +85oC,
unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOUT
Output Voltage
VIN = 2.8V
1mA ≤ IOUT ≤ 30mA
1.764
1.8
1.836
V
VIN
Input Voltage
–
–
–
6
V
IOUT(MAX)
Maximum Output Current
VIN-VOUT = 1V, VOUT = 1.76V
300
360
–
mA
VRLOAD
Load Regulation
VIN = 2.8V
1mA ≤ IOUT ≤ 300mA
–
6
15
mV
VRLINE
Line Regulation
2.8V ≤ VIN ≤ 6V
IOUT = 30mA
–
1
15
mV
VDROP
Dropout Voltage
IOUT = 10mA
–
10
12
mV
IOUT = 100mA
–
100
120
IOUT = 300mA
–
300
360
IQ
Quiescent Current
VIN = 2.8V, IOUT = 0mA
–
60
90
µA
ISTD
Standby Current
VIN = 2.8V
VCE in OFF mode
–
0.01
1.0
µA
PSRR
Power Supply Rejection Ratio
Ripple 0.5Vp-p,
VIN = 2.8V
f = 100Hz
–
70
–
dB
f = 1KHz
–
70
–
dB
(∆VOUT/VOUT)/∆T
Output Voltage
Temperature Coefficient
IOUT = 30mA
–
±100
–
ppm/oC
ISHORT
Short Current Limit
VOUT = 0V
–
50
–
mA
VNOISE
RMS Output Noise
10Hz ≤ f ≤ 100kHz
–
50
–
µVrms
–
CE "High" Voltage
CE input voltage "High"
1.5
–
–
V
–
CE "Low" Voltage
CE input voltage "Low"
–
–
0.4
V
–
Thermal Shutdown
–
–
+160
–
oC
–
Thermal Shutdown Hysteresis
–
–
+25
–
oC
AP2125
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AP2125
Electrical Characteristics (Cont.)
AP2125-2.5 Electrical Characteristics (@VIN = 3.5V, TA = +25oC, CIN = 1µF, COUT = 1µF, Bold typeface applies over -40oC ≤
T
J ≤ +85oC,
unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOUT
Output Voltage
VIN = 3.5V
1mA ≤ IOUT ≤ 30mA
2.45
2.5
2.55
V
VIN
Input Voltage
–
–
–
6
V
IOUT(MAX)
Maximum Output Current
VIN-VOUT = 1V, VOUT = 2.45V
300
360
–
mA
VRLOAD
Load Regulation
VIN = 3.5V
1mA ≤ IOUT ≤ 300mA
–
10
15
mV
VRLINE
Line Regulation
3.5V ≤ VIN ≤ 6V
IOUT = 30mA
–
1
15
mV
VDROP
Dropout Voltage
IOUT = 10mA
–
6.5
10
mV
IOUT = 100mA
–
65
100
IOUT = 300mA
–
200
300
IQ
Quiescent Current
VIN = 3.5V, IOUT = 0mA
–
60
90
µA
ISTD
Standby Current
VIN = 3.5V
VCE in OFF mode
–
0.01
1.0
µA
PSRR
Power Supply Rejection Ratio
Ripple 0.5Vp-p,
VIN = 3.5V
f = 100Hz
–
65
–
dB
f = 1KHz
–
65
–
dB
(∆VOUT/VOUT)/∆T
Output Voltage
Temperature Coefficient
IOUT = 30mA
–
±100
–
ppm/oC
ISHORT
Short Current Limit
VOUT = 0V
–
50
–
mA
VNOISE
RMS Output Noise
10Hz ≤ f ≤ 100kHz
–
50
–
µVrms
–
CE "High" Voltage
CE input voltage "High"
1.5
–
–
V
–
CE "Low" Voltage
CE input voltage "Low"
–
–
0.4
V
–
Thermal Shutdown
–
–
+160
–
oC
–
Thermal Shutdown Hysteresis
–
–
+25
–
oC
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AP2125
Electrical Characteristics (Cont.)
AP2125-2.8 Electrical Characteristics (@VIN = 3.8V, TA = +25oC, CIN = 1µF, COUT = 1µF, Bold typeface applies over -40oC ≤
T
J ≤ +85oC,
unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOUT
Output Voltage
VIN = 3.8V
1mA ≤ IOUT ≤ 30mA
2.744
2.8
2.856
V
VIN
Input Voltage
–
–
–
6
V
IOUT(MAX)
Maximum Output Current
VIN-VOUT = 1V, VOUT = 2.74V
300
360
–
mA
VRLOAD
Load Regulation
VIN = 3.8V
1mA ≤ IOUT ≤ 300mA
–
11
15
mV
VRLINE
Line Regulation
3.8V ≤ VIN ≤ 6V
IOUT = 30mA
–
1
15
mV
VDROP
Dropout Voltage
IOUT = 10mA
–
6.5
10
mV
IOUT = 100mA
–
65
100
IOUT = 300mA
–
200
300
IQ
Quiescent Current
VIN = 3.8V, IOUT = 0mA
–
60
90
µA
ISTD
Standby Current
VIN = 3.8V
VCE in OFF mode
–
0.01
1.0
µA
PSRR
Power Supply Rejection Ratio
Ripple 0.5Vp-p,
VIN = 3.8V
f = 100Hz
–
65
–
dB
f = 1KHz
–
65
–
dB
(∆VOUT/VOUT)/∆T
Output Voltage
Temperature Coefficient
IOUT = 30mA
–
±100
–
ppm/oC
ISHORT
Short Current Limit
VOUT = 0V
–
50
–
mA
VNOISE
RMS Output Noise
10Hz ≤ f ≤ 100kHz
–
50
–
µVrms
–
CE "High" Voltage
CE input voltage "High"
1.5
–
–
V
–
CE "Low" Voltage
CE input voltage "Low"
–
–
0.4
V
–
Thermal Shutdown
–
–
+160
–
oC
–
Thermal Shutdown Hysteresis
–
–
+25
–
oC
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AP2125
Electrical Characteristics (Cont.)
AP2125-3.0 Electrical Characteristics (@VIN = 4.0V, TA = +25oC, CIN = 1µF, COUT = 1µF, Bold typeface applies over -40oC ≤
T
J ≤ +85oC,
unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOUT
Output Voltage
VIN = 4.0V
1mA ≤ IOUT ≤ 30mA
2.94
3.0
3.06
V
VIN
Input Voltage
–
–
–
6
V
IOUT(MAX)
Maximum Output Current
VIN-VOUT = 1V, VOUT = 2.94V
300
360
–
mA
VRLOAD
Load Regulation
VIN = 4.0V
1mA ≤ IOUT ≤ 300mA
–
12
15
mV
VRLINE
Line Regulation
4.0V ≤ VIN ≤ 6V
IOUT = 30mA
–
1
15
mV
VDROP
Dropout Voltage
IOUT = 10mA
–
6.5
10
mV
IOUT = 100mA
–
65
100
IOUT = 300mA
–
200
300
IQ
Quiescent Current
VIN = 4.0V, IOUT = 0mA
–
60
90
µA
ISTD
Standby Current
VIN = 4.0V
VCE in OFF mode
–
0.01
1.0
µA
PSRR
Power Supply Rejection Ratio
Ripple 0.5Vp-p,
VIN = 4.0V
f = 100Hz
–
65
–
dB
f = 1KHz
–
65
–
dB
(∆VOUT/VOUT)/∆T
Output Voltage
Temperature Coefficient
IOUT = 30mA
–
±100
–
ppm/oC
ISHORT
Short Current Limit
VOUT = 0V
–
50
–
mA
VNOISE
RMS Output Noise
10Hz ≤ f ≤ 100kHz
–
50
–
µVrms
–
CE "High" Voltage
CE input voltage "High"
1.5
–
–
V
–
CE "Low" Voltage
CE input voltage "Low"
–
–
0.4
V
–
Thermal Shutdown
–
–
+160
–
oC
–
Thermal Shutdown Hysteresis
–
–
+25
–
oC
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AP2125
Electrical Characteristics (Cont.)
AP2125-3.3 Electrical Characteristics (@VIN = 4.3V, TA = +25oC, CIN = 1µF, COUT = 1µF, Bold typeface applies over -40oC ≤
T
J ≤ +85oC,
unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOUT
Output Voltage
VIN = 4.3V
1mA ≤ IOUT ≤ 30mA
3.234
3.3
3.366
V
VIN
Input Voltage
–
–
–
6
V
IOUT(MAX)
Maximum Output Current
VIN-VOUT = 1V, VOUT = 3.23V
300
360
–
mA
VRLOAD
Load Regulation
VIN = 4.3V
1mA ≤ IOUT ≤ 300mA
–
13
15
mV
VRLINE
Line Regulation
4.3V ≤ VIN ≤ 6V
IOUT = 30mA
–
1
15
mV
VDROP
Dropout Voltage
IOUT = 10mA
–
6.5
10
mV
IOUT = 100mA
–
65
100
IOUT = 300mA
–
200
300
IQ
Quiescent Current
VIN = 4.3V, IOUT = 0mA
–
60
90
µA
ISTD
Standby Current
VIN = 4.3V
VCE in OFF mode
–
0.01
1.0
µA
PSRR
Power Supply Rejection Ratio
Ripple 0.5Vp-p,
VIN = 4.3V
f = 100Hz
–
65
–
dB
f = 1KHz
–
65
–
dB
(∆VOUT/VOUT)/∆T
Output Voltage
Temperature Coefficient
IOUT = 30mA
–
±100
–
ppm/oC
ISHORT
Short Current Limit
VOUT = 0V
–
50
–
mA
VNOISE
RMS Output Noise
10Hz ≤ f ≤ 100kHz
–
50
–
µVrms
–
CE "High" Voltage
CE input voltage "High"
1.5
–
–
V
–
CE "Low" Voltage
CE input voltage "Low"
–
–
0.4
V
–
Thermal Shutdown
–
–
+160
–
oC
–
Thermal Shutdown Hysteresis
–
–
+25
–
oC
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AP2125
Electrical Characteristics (Cont.)
AP2125-4.15 Electrical Characteristics (@VIN = 5.15V, TA = +25oC, CIN = 1µF, COUT = 1µF, Bold typeface applies over -40oC ≤
T
J ≤ +85oC,
unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOUT
Output Voltage
VIN = 5.15V
1mA ≤ IOUT ≤ 30mA
4.067
4.15
4.233
V
VIN
Input Voltage
–
–
–
6
V
IOUT(MAX)
Maximum Output Current
VIN-VOUT = 1V, VOUT = 4.06V
300
360
–
mA
VRLOAD
Load Regulation
VIN = 5.15V
1mA ≤ IOUT ≤ 300mA
–
13
15
mV
VRLINE
Line Regulation
5.15V ≤ VIN ≤ 6V
IOUT = 30mA
–
1
15
mV
VDROP
Dropout Voltage
IOUT = 10mA
–
6.5
10
mV
IOUT = 100mA
–
65
100
IOUT = 300mA
–
200
300
IQ
Quiescent Current
VIN = 5.15V, IOUT = 0mA
–
60
90
µA
ISTD
Standby Current
VIN = 5.15V
VCE in OFF mode
–
0.01
1.0
µA
PSRR
Power Supply Rejection Ratio
Ripple 0.5Vp-p,
VIN = 5.15V
f = 100Hz
–
65
–
dB
f = 1KHz
–
65
–
dB
(∆VOUT/VOUT)/∆T
Output Voltage
Temperature Coefficient
IOUT = 30mA
–
±100
–
ppm/oC
ISHORT
Short Current Limit
VOUT = 0V
–
50
–
mA
VNOISE
RMS Output Noise
10Hz ≤ f ≤ 100kHz
–
50
–
µVrms
–
CE "High" Voltage
CE input voltage "High"
1.5
–
–
V
–
CE "Low" Voltage
CE input voltage "Low"
–
–
0.4
V
–
Thermal Shutdown
–
–
+160
–
oC
–
Thermal Shutdown Hysteresis
–
–
+25
–
oC
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AP2125
Electrical Characteristics (Cont.)
AP2125-4.2 Electrical Characteristics (@VIN = 5.2V, TA = +25oC, CIN = 1µF, COUT = 1µF, Bold typeface applies over -40oC ≤
T
J ≤ +85oC,
unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VOUT
Output Voltage
VIN = 5.2V
1mA ≤ IOUT ≤ 30mA
4.116
4.2
4.284
V
VIN
Input Voltage
–
–
–
6
V
IOUT(MAX)
Maximum Output Current
VIN-VOUT = 1V, VOUT = 4.12V
300
360
–
mA
VRLOAD
Load Regulation
VIN = 5.2V
1mA ≤ IOUT ≤ 300mA
–
13
15
mV
VRLINE
Line Regulation
5.2V ≤ VIN ≤ 6V
IOUT = 30mA
–
1
15
mV
VDROP
Dropout Voltage
IOUT = 10mA
–
6.5
10
mV
IOUT = 100mA
–
65
100
IOUT = 300mA
–
200
300
IQ
Quiescent Current
VIN = 5.2V, IOUT = 0mA
–
60
90
µA
ISTD
Standby Current
VIN = 5.2V
VCE in OFF mode
–
0.01
1.0
µA
PSRR
Power Supply Rejection Ratio
Ripple 0.5Vp-p,
VIN = 5.2V
f = 100Hz
–
65
–
dB
f = 1KHz
–
65
–
dB
(∆VOUT/VOUT)/∆T
Output Voltage
Temperature Coefficient
IOUT = 30mA
–
±100
–
ppm/oC
ISHORT
Short Current Limit
VOUT = 0V
–
50
–
mA
VNOISE
RMS Output Noise
10Hz ≤ f ≤ 100kHz
–
50
–
µVrms
–
CE "High" Voltage
CE input voltage "High"
1.5
–
–
V
–
CE "Low" Voltage
CE input voltage "Low"
–
–
0.4
V
–
Thermal Shutdown
–
–
+160
–
oC
–
Thermal Shutdown Hysteresis
–
–
+25
–
oC
AP2125
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AP2125
Performance Characteristics
Output Voltage vs. Output Current Output Voltage vs. Output Current
Dropout Voltage vs. Output Current Dropout Voltage vs. Output Current
Dropout Voltage vs. Case Temperature Dropout Voltage vs. Case Temperature
050 100 150 200 250 300
3.30
3.32
3.34
3.36
3.38
3.40
3.42
3.44
3.46
3.48
3.50
AP2125-3.3
VIN=4.3V
TC=25oC
Output Voltage (V)
Output Current (mA)
030 60 90 120 150 180 210 240 270 300
0
40
80
120
160
200
240
280
320
360
400
AP2125-1.8
VIN=2.8V
TC=-40oC
TC=25oC
TC=85oC
Dropout Voltage (mV)
Output Current (mA)
030 60 90 120 150 180 210 240 270 300
0
40
80
120
160
200
240
280
320
360
400
TC=-40oC
TC=25oC
TC=85oC
AP2125-3.3
VIN=4.3V
5
Dropout Voltage (mV)
Output Current (mA)
-25 0 25 50 75
0
40
80
120
160
200
240
280
320
360
400
AP2125-1.8
VIN=2.8V
IOUT=10mA
IOUT=100mA
IOUT=200mA
IOUT=300mA
Dropout Voltage (mV)
Case Temperature (oC)
-25 0 25 50 75
0
40
80
120
160
200
240
280
320
360
400
AP2125-3.3
VIN=4.3V
IOUT=10mA
IOUT=100mA
IOUT=200mA
IOUT=300mA
Dropout Voltage (mV)
Case Temperature (oC)
050 100 150 200 250 300
1.70
1.72
1.74
1.76
1.78
1.80
1.82
1.84
1.86
1.88
1.90
AP2125-1.8
VIN=2.8V
TC=25oC
Output Voltage (V)
Output Current (mA)
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AP2125
Performance Characteristics (Cont.)
Current Limit Current Limit
Current Limit Current Limit
Output Voltage vs. Input Voltage Output Voltage vs. Input Voltage
050 100 150 200 250 300 350 400 450 500
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
AP2125-3.3
TC=25oC
Output Voltage (V)
Output Current (mA)
VIN=4.3V
VIN=6V
050 100 150 200 250 300 350 400 450 500
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
AP2125-1.8
VIN=2.8V
Output Voltage (V)
Output Current (mA)
TC=-40oC
TC=25oC
TC=85oC
050 100 150 200 250 300 350 400 450 500
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
AP2125-3.3
VIN=4.3V
Output Voltage (V)
Output Current (mA)
TC=-40oC
TC=25oC
TC=85oC
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
AP2125-1.8
TC=25oC
Output Voltage (V)
Input Voltage (V)
1mA
100mA
300mA
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
AP2125-3.3
TC=25oC
Output Voltage (V)
Input Voltage (V)
1mA
100mA
300mA
050 100 150 200 250 300 350 400 450 500
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
AP2125-1.8V
TC=25oC
Output Voltage (V)
Output Current (mA)
VIN=2.8V
VIN=6V
AP2125
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AP2125
Performance Characteristics (Cont.)
Output Voltage vs. Input Voltage Output Voltage vs. Input Voltage
Output Voltage vs. Case Temperature Output Voltage vs. Case Temperature
Supply Current vs. Input Voltage Supply Current vs. Input Voltage
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
AP2125-1.8
TC=25oC
No Load
Output Voltage (V)
Input Voltage (V)
TC=-40oC
TC=25oC
TC=85oC
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
0.0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
AP2125-3.3
TC=25oC
No Load
Output Voltage (V)
Input Voltage (V)
TC=-40oC
TC=25oC
TC=85oC
-25 0 25 50 75
1.70
1.72
1.74
1.76
1.78
1.80
1.82
1.84
1.86
1.88
1.90
AP2125-1.8
VIN=2.8V
Output Voltage (V)
Case Temperature (oC)
IOUT=10mA
IOUT=30mA
IOUT=100mA
IOUT=300mA
-25 0 25 50 75
3.20
3.22
3.24
3.26
3.28
3.30
3.32
3.34
3.36
3.38
3.40 AP2125-3.3
VIN=4.3V
Output Voltage (V)
Case Temperature (oC)
IOUT=10mA
IOUT=30mA
IOUT=100mA
IOUT=300mA
0 1 2 3 4 5 6
0
10
20
30
40
50
60
70
80
90
100
AP2125-1.8
No Load
TC=-40oC
TC=25oC
TC=85oC
Supply Current (A)
Input Voltage (V)
0 1 2 3 4 5 6
0
10
20
30
40
50
60
70
80
90
100
TC=-40oC
TC=25oC
TC=85oC
AP2125-3.3
No Load
Supply Current (A)
Input Voltage (V)
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Performance Characteristics (Cont.)
Supply Current vs. Case Temperature Supply Current vs. Case Temperature
Supply Current vs. Output Current Supply Current vs. Output Current
Supply Current vs. Output Current Supply Current vs. Output Current
-40 -20 0 20 40 60 80
40
44
48
52
56
60
64
68
72
76
80
Supply Current (A)
Case Temperature (oC)
AP2125-1.8
VIN=2.8V
No Load
-40 -20 0 20 40 60 80
40
44
48
52
56
60
64
68
72
76
80
AP2125-3.3
VIN=4.3V
No Load
Supply Current (A)
Case Temperature (oC)
050 100 150 200 250 300 350 400 450 500
0
10
20
30
40
50
60
70
80
90
100
110
120
130
AP2125-1.8
VIN=2.8V
Supply Current (A)
Output Current (mA)
TC=-40oC
TC=25oC
TC=85oC
050 100 150 200 250 300 350 400
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
AP2125-3.3
VIN=4.3V
Supply Current (A)
Output Current (mA)
TC=-40oC
TC=25oC
TC=85oC
040 80 120 160 200 240 280 320 360 400 440 480
0
10
20
30
40
50
60
70
80
90
100
110
120
AP2125-1.8
TC=25oC
Supply Current (A)
Output Current (mA)
VIN=2.8V
VIN=6V
040 80 120 160 200 240 280 320 360 400
0
15
30
45
60
75
90
105
120
135
150
AP2125-3.3
TC=25oC
Supply Current (A)
Output Current (mA)
VIN=4.3V
VIN=6V
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Performance Characteristics (Cont.)
Line Transient Line Transient
(Conditions: IOUT = 30mA, COUT = 1µF, VIN = 2.8V to 3.8V) (Conditions: IOUT = 30mA, COUT = 1µF, VIN = 4V to 5V)
Load Transient Load Transient
(Conditions: IOUT = 10 to 100mA, CIN = 1µF, (Conditions: IOUT = 10 to 100mA, CIN = 1µF,
COUT = 1µF, VIN = 2.8V) COUT = 1µF, VIN = 4.3V)
Enable Input Response and Auto-discharge
(Conditions: VCE = 0 to 3V, CIN = 1 µF, ESR vs. Output Current
COUT = 1µF, VIN = 3V, no Load)
050 100 150 200 250 300
0.1
1
10
100
1000
Stable Area
AP2125-1.8
CIN = 1F
COUT = 1F
ESR ()
Output Current (mA)
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Performance Characteristics (Cont.)
PSRR PSRR
Power Dissipation vs. Ambient Temperature Power Dissipation vs. Ambient Temperature
10 100 1k 10k 100k
0
10
20
30
40
50
60
70
80
90
100
PSRR (dB)
Frequency (Hz)
AP2125-1.8
VIN=2.8V
IOUT=30mA
10 100 1k 10k 100k
0
10
20
30
40
50
60
70
80
90
100
PSRR (dB)
Frequency (Hz)
AP2125-3.3
VIN=4.3V
IOUT=30mA
30 40 50 60 70 80 90 100 110 120
0
50
100
150
200
250
300
350
400
450
500
550
600
Power Dissipation (mW)
Ambient Temperature (oC)
AP2125-1.8
Package: SC-70-5
No Heatsink
30 40 50 60 70 80 90 100 110 120
0
100
200
300
400
500
600
700
800
Power Dissipation (mW)
Ambient Temperature (oC)
AP2125-3.3
Package: SOT-23-5
No Heatsink
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Ordering Information
AP2125 XX–XX XX XX
PackingVoltage Version
TR : Tape & Reel
N : SOT-23-3
K : SOT-23-5
Product Name Package
1.8 : Fixed Output 1.8V
KS : SC-70-5 2.5 : Fixed Output 2.5V
2.8 : Fixed Output 2.8V
3.0 : Fixed Output 3.0V
3.3 : Fixed Output 3.3V
4.15 : Fixed Output 4.15V
4.2 : Fixed Output 4.2V
G1 : Green
RoHS/Green
Package
Temperature
Range
Part Number
Marking ID
Packing
SOT-23-3
-40 to +85oC
AP2125N-1.8TRG1
GJ2
3000/Tape & Reel
AP2125N-2.5TRG1
GJ4
3000/Tape & Reel
AP2125N-2.8TRG1
GJ5
3000/Tape & Reel
AP2125N-3.0TRG1
GJ6
3000/Tape & Reel
AP2125N-3.3TRG1
GJ7
3000/Tape & Reel
AP2125N-4.2TRG1
GJ3
3000/Tape & Reel
SOT-23-5
-40 to +85oC
AP2125K-1.8TRG1
GCB
3000/Tape & Reel
AP2125K-2.5TRG1
GCD
3000/Tape & Reel
AP2125K-2.8TRG1
GCE
3000/Tape & Reel
AP2125K-3.0TRG1
GCF
3000/Tape & Reel
AP2125K-3.3TRG1
GCG
3000/Tape & Reel
AP2125K-4.15TRG1
GCJ
3000/Tape & Reel
AP2125K-4.2TRG1
GCC
3000/Tape & Reel
SC-70-5
-40 to +85oC
AP2125KS-1.8TRG1
B6
3000/Tape & Reel
AP2125KS-2.5TRG1
C5
3000/Tape & Reel
AP2125KS-2.8TRG1
B7
3000/Tape & Reel
AP2125KS-3.0TRG1
C6
3000/Tape & Reel
AP2125KS-3.3TRG1
B8
3000/Tape & Reel
AP2125KS-4.2TRG1
C4
3000/Tape & Reel
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Marking Information
(1) SOT-23-3 (Top View)
(2) SOT-23-5
(Top View)
(3) SC-70-5
(Top View)
: Logo
XXX: Marking ID
(See Ordering Information)
: Logo
XXX: Marking ID
(See Ordering Information)
: Logo
XX: Marking ID
(See Ordering Information)
XXX
XXX
XX
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Package Outline Dimensions (All dimensions in mm(inch).)
(1) Package Type: SOT-23-3
2.820(0.111)
3.100(0.122)
2.650(0.104)
3.000(0.118)
0.950(0.037)
TYP 0.300(0.012)
0.500(0.020)
1.500(0.059)
1.700(0.067)
1.800(0.071)
2.000(0.079)
0.300(0.012)
0.600(0.024)
0.100(0.004)
0.200(0.008)
0.000(0.000)
0.150(0.006)
0.900(0.035)
1.300(0.051)
1.450(0.057)
MAX.
0.200(0.008)
0
8
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Package Outline Dimensions (Cont. All dimensions in mm(inch).)
(2) Package Type: SOT-23-5
2.820(0.111)
2.650(0.104)
1.500(0.059)
0.000(0.000)
0.300(0.012)
0.950(0.037)
0.900(0.035)
0.100(0.004)
0.200(0.008)
0.300(0.012)
8°
0°
3.100(0.122)
1.700(0.067)
3.000(0.118)
0.500(0.020)
0.150(0.006)
1.300(0.051)
0.200(0.008)
0.600(0.024)
1.800(0.071)
2.000(0.079)
0.700(0.028)
REF
TYP
1.450(0.057)
MAX
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Package Outline Dimensions (Cont. All dimensions in mm(inch).)
(3) Package Type: SC-70-5
2.000(0.079)
2.200(0.087)
2.150(0.085)
2.450(0.096)
1.150(0.045)
1.350(0.053)
0.650(0.026)TYP
1.200(0.047)
1.400(0.055)
0.150(0.006)
0.350(0.014)
0.525(0.021)REF
0.080(0.003)
0.150(0.006)
0°
8°
0.200(0.008)
0.260(0.010)
0.460(0.018)
0.000(0.000)
0.100(0.004)
0.900(0.035)
1.000(0.039) 0.900(0.035)
1.100(0.043)
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Suggested Pad Layout
(1) Package Type: SOT-23-3
Y
Z
GE1
E2
X
Dimensions
Z
(mm)/(inch)
G
(mm)/(inch)
X
(mm)/(inch)
Y
(mm)/(inch)
E1
(mm)/(inch)
E2
(mm)/(inch)
Value
3.600/0.142
1.600/0.063
0.700/0.028
1.000/0.039
0.950/0.037
1.900/0.075
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Suggested Pad Layout (Cont.)
(2) Package Type: SOT-23-5
E2
E1
Y
X
GZ
Dimensions
Z
(mm)/(inch)
G
(mm)/(inch)
X
(mm)/(inch)
Y
(mm)/(inch)
E1
(mm)/(inch)
E2
(mm)/(inch)
Value
3.600/0.142
1.600/0.063
0.700/0.028
1.000/0.039
0.950/0.037
1.900/0.075
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
Suggested Pad Layout (Cont.)
(3) Package Type: SC-70-5
Y
X
E
G
E1
Z
Dimensions
Z
(mm)/(inch)
G
(mm)/(inch)
X
(mm)/(inch)
Y
(mm)/(inch)
E
(mm)/(inch)
E1
(mm)/(inch)
Value
2.740/0.108
1.140/0.045
0.400/0.016
0.800/0.031
1.300/0.051
0.650/0.026
AP2125
Document number: DS38144 Rev. 2 - 2
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AP2125
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2016, Diodes Incorporated
www.diodes.com