Advanced Power
Electronics Corp.
1.5A HIGH OUTPUT CURRENT LDO REGULATOR
FEATURES DESCRIPTIOON
Input Voltage：2.6V to 5.5V
Dropout Voltage is 450mV at 1.5A Output
Current @ VOUT = 3.30V
Guaranteed 1.5A Output Current
Low Quiescent Current is 50µA (Typ.)
Fixed Output Voltage is form 1.2 V to 5V by 0.1V Steps.
Fast Transient Response
Current Limit and Thermal Shutdown Protection
Short Circuit Current Fold-back
Available in the 3-Pin Pb-Free SOT-223, TO-263,
TO-252, SOT-89 and SO-8 Packages
1. For SOT-223/TO-252/TO-263/SOT-89 packages
2. For SO-8 package
Data and specifications subject to change without notice
201201174
APE8970/A
TYPICAL APPLICATION
1
ORDERING INFORMATIO
N
The APE8970/A is a low noise, high output
current, low quiescent current and low dropout linea
r
regulator. The Device includes pass element, error
amplifier, band-gap, current-limit and thermal shutdown
circuitry. The output current is up to 1.5A. The
characteristics of low dropout voltage and less
quiescent current make it good for some critical current
application, for example, some battery powered
devices. The typical quiescent current is approximately
50 µ A. Due to internal flexible design; result in
extensively fixed output voltage versions form 1.2V to
5V per 0.1V steps. Built-in current-limit, Short current
protection and thermal-shutdown functions prevent any
fault condition from IC damage.
VIN VOUT
GND
IN
C
VIN
OUT
C
APE8970/A
2.2uF 2.2uF
OUT
V
VIN VOUT
GND
IN
C
VIN
OUT
C
APE8970
2.2uF 2.2uF
OUT
V
10nF
EN BP
APE8970X X-XX
S : TO-263
H : TO-252
K : SOT-223
M : SO-8
G : SOT-89
Output voltage
Package
12 : 1.2V
13 : 1.3V
50 : 5.0V
Refer
Pin Assignment
Pin Define
Advanced Power
Electronics Corp. APE8970/
A
PACKAGE INFORMATION
ABSOLUTE MAXIMUM RATINGS (at TA=25oC)
VIN Pin Voltage (VIN) -------------------------------------
-
GND - 0.3V to GND + 6.5V
OUTPUT Pin Voltage (VOUT) ----------------------------
-
GND - 0.3V to VIN + 0.3V
EN and BP Pin Voltage (VEN/VBP) ---------------------
-
GND - 0.3V to VIN + 0.3V
Power Dissipation (PD)SOT-223------
-
1.3W
TO-252--------
-
2.2W
TO-263--------
-
4W
SO-8-----------
-
1.4W
SOT-89-------- 0.6W
Storage Temperature Range (TST) --------------------
-
-40 to +150°C
Operating Temperature Range (TOP) -----------------
-40 to +85°C
Junction Temperature Range (TJ) --------------------- -40 to +125°C
SOT-223------
-
75°C/W
TO-252--------
-
45°C/W
TO-263--------
-
25°C/W
SO-8-----------
-
70°C/W
SOT-89-------- 160°C/W
SOT-223------
-
15oC/W
TO-252--------
-
10oC/W
TO-263--------
-
3.5oC/W
SO-8-----------
-
25oC/W
SOT-89-------- 100°C/W
Note1 : RthJA is measured with the PCB copper area of approximately 1 in2(Multi-layer). That need connect to tap pin.
2
Thermal Resistance from Junction to Case (Rthjc)
Thermal Resistance from Junction to Ambient (Rthja)
321
VIN
VOUT
GND
Tab is VOUT
( Top View )
APE8970A
321
VIN VOUT
GND
Tab is GND
(Top View)
APE8970
TO-252 TO-252
VIN GND VOUT
Tab is GND
( Top View )
32
1
Tab is VOUT
( Top View )
32
1
VINGND VOUT
SOT-223
SOT-89
APE8970A
APE8970
SOT-223
SOT-89
321
VIN VOUT
GND
Tab is G ND
TOP VIEW
321
VIN
VOUT
GND
Tab is VOUT
TOP VIEW
TO-263
APE8970A
APE8970
TO-263
(Top View)
1
2
3
4
8
7
6
5
VOUT
BP
SO-8
APE8970
EN
VIN
GND
GND
GND
GND
Advanced Power
Electronics Corp. APE8970/
A
Parameter SYM TEST CONDITION MIN TYP MAX UNITS
Input Voltage VIN IOUT=30mA 2.6 - 5.5 V
VIN=VOUT+0.1V to 5.5V
VOUT≧2.5V, IOUT=1mA
VIN=2.6V to 5.5V
2.5V＞VOUT≧1.20V, IOUT=1mA
Quiescent Current IQIOUT =0mA, VIN=5V -5080
μA
Shutdown Current ISD IOUT =0mA, VEN=0V --2
μA
VOUT=1.20V - 1.3 1.7
VOUT=1.50V - 1 1.4
VOUT=1.80V - 0.7 1.1
VOUT=2.50V - 0.55 0.75
VOUT=3.30V - 0.45 0.65
Current Limit (Note 2) ILIMIT 1.6 2 - A
Short Circuit Current ISHORT Output Voltage < 0.25*VOUT - 600 - mA
2.0V＞VOUT -1020mV
2.0V≦VOUT - 0.5 1 %
F=120Hz - 65 -
F=1KHz - 60 -
VENH Regulator Enable 2 - -
VENL Regulator Shutdown - - 0.6
IENH VEN=VIN - 0.003 0.1
IENL VEN=0V - 1 1.5
Temperature Shutdown TS- 150 - ºC
Temperature Shutdown Hysterisis TSH -30- ºC
Note1: Minimum VIN voltage is defined by output adds a dropout voltage.
Note2: Current limit is measured at constant junction temperature by using pulsed testing with a low ON time.
Note3: Regulation is measured at constant junction temperature by using pulsed testing with a low ON time.
PIN DESCRIPTIONS
PIN SYMBOL PIN DESCRIPTION
Active-Low Shutdown Input. A logic low reduces the supply current to less than
2µA. Connect to VIN or Floating for normal operation. (SO-8 only)
VOUT Output Voltage
VIN Input Voltage
BP Band-gap (SO-8 only)
GND Ground
Enable Pin Current (SO-8 only)
%
V
V
μA
Output Voltage Accuracy (Note1)
-2 - 2
-3
dBRipple Rejection PSRR
ΔVOUT
Dropout Voltage VDROP
3
ELECTRICAL SPECIFICATIONS (TA=25oC, unless otherwise specified)
EN
Load Regulation (Note 3) ΔVLOAD
Enable Input Threshold (SO-8
only)
-3
CIN=2.2uF, CO=2.2uF,
IOUT =10mA
IOUT =10m~1.5A
IOUT=1.5A
Advanced Power
Electronics Corp. APE8970/
A
BLOCK DIAGRAM
FUNCTION DESCRIPTIONS
APPLICATION INFORMATION
Capacitor Selection
Input-Output (Dropout) Voltage
4
Like any low-dropout regulator, the APE8970/A requires input and output decoupling
capacitors. The device is specifically designed for portable applications requiring minimum board
space and smallest components. These capacitors must be correctly selected for good
performance. Please note that linear regulators with a low dropout voltage have high internal loop
gains which require care in guarding against oscillation caused by insufficient decoupling
capacitance.
Normally, use a 2.2µF capacitor on the input and a 2.2µF capacitor on the output of the
APE8970/A. Larger input capacitor values and lower ESR (X5R, X7R) provide better supply-noise
rejection and transient response. A higher- value output capacitor (4.7µF) may be necessary i
f
large, fast transients are anticipated and the device is located several inches from the powe
r
source.
A regulator's minimum input-to-output voltage differential (dropout voltage) determines the
lowest usable supply voltage. In battery-powered systems, this determines the useful end-of-life
battery voltage. Because the device uses a PMOS, its dropout voltage is a function of drain-to
source on-resistance, RDS(ON), multiplied by the load current:
VDROPOUT = VIN -VOUT = RDS(ON) x IOUT
A minimum of 2.2µF capacitor must be connected from VOUT to ground to insure stability.
Typically a large storage capacitor is connected from VIN to ground to ensure that the input
voltage does not sag below the minimum dropout voltage during the load transient response. This
pin must always be dropout voltage higher than VOUT in order for the device to regulate properly.
Current
Limit -+
VIN VOUT
GND
Error
Amp
Bandgap
Thermal
Shutdown
Enable
EN
BP
Advanced Power
Electronics Corp. APE8970/
A
Current Limit and Short-Circuit Protection
Thermal Considerations
PCB Layout
5
An input capacitance of ~ 2.2µF is required between the APE8970/A input pin and ground
(the amount of the capacitance may be increased without limit), this capacitor must be located a
distance of not more than 1cm from the input and return to a clean analog ground. Input capacitor
can filter out the input voltage spike caused by the surge current due to the inductive effect of the
package pin and the printed circuit board’s routing wire. Otherwise, the actual voltage at the VIN
pin may exceed the absolute maximum rating. The output capacitor also must be located a
distance of not more than 1cm from output to a clean analog ground. Because it can filter out the
output spike caused by the surge current due to the inductive effect of the package pin and the
printed circuit board’s routing wire.
The APE8970/A series can deliver a current of up to 1.5A over the full operating junction
temperature range. However, the maximum output current must be dated at higher ambient
temperature to ensure the junction temperature does not exceed 125 ° C. With all possible
conditions, the junction temperature must be within the range specified under operating
conditions. Power dissipation can be calculated based on the output current and the voltage drop
across regulator.
PD = (VIN - VOUT) IOUT
The final operating junction temperature for any set of conditions can be estimated by the
following thermal equation:
PD(MAX) = (TJ(MAX) - TA) / RthJA
Where TJ(MAX) is the maximum junction temperature of the die (125 ° C) and TAis the
maximum ambient temperature. The junction to ambient thermal resistance (RthJA) for SOT-223
package at recommended minimum footprint is 75°C/W (please refer Maximum rating table) that
is connected 1 in2 PCB copper area to tap pin.
The APE8970/A used a current sense-resistor to monitor the output current. A portion of the
PMOS output transistor’s current is mirrored to a resistor such that the voltage across this resistor
is proportional to the output current. Once the output current exceeds limit threshold, APE8970/A
would be protected with a limited output current. Further more, when the output is short to ground,
the output current would be folded-back to a less limit.
Advanced Power
Electronics Corp. APE8970/
A
TYPICAL PERFORMANCE CHARACTERISTICS
6
V
IN
VS.I
CCQ
20
30
40
50
60
70
80
2.6 3 3.5 4 4.5 5 5.5
V
IN
(V)
I
CCQ
(uA)
I
OUT
=0mA
V
IN
VS. I
SD
0
0.2
0.4
0.6
0.8
1
1.2
1.4
2.6 3 3.5 4 4.5 5 5.5
V
IN
(V)
I
SD
(uA)
V
EN
=0V
V
IN
VS. I
CL
0
1
2
3
4
5
2.633.544.555.5
V
IN
(V)
I
CL
(A)
V
OUT
=1.2V
V
IN
VS. Threshold Voltage
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
2.6 3 3.5 4 4.5 5 5.5
V
IN
(V)
V
ENH
/V
ENL
(V)
V
ENH
V
ENL
Temperature VS. I
CCQ
0
10
20
30
40
50
60
70
80
90
100
-40℃-20℃0℃25℃50℃85℃105℃125℃
Temperature
I
CCQ
(uA)
V
IN
=5V
Load Regulation
1.14
1.16
1.18
1.2
1.22
1.24
1.26
0 0.01 0.1 0.3 0.5 0.8 1 1.2 1.5
I
OUT
(A)
V
OUT
(V )
V
IN
=3.3V
Advanced Power
Electronics Corp. APE8970/
A
TYPICAL PERFORMANCE CHARACTERISTICS
7
Thermal Shutdown Release
Power-ON
Load TransientEN-ON (SO-8 Only)
I
OUT
VS. Dropout Voltage
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
0.1 0.3 0.5 0.8 1 1.2 1.5
I
OUT
(A)
Dropout Voltage (mV
)
V
OUT
=1.2
V
OUT
=1.5
V
OUT
=1.8 V
OUT
=2.5
V
OUT
=3.3
V
OUT
=5.0
Advanced Power
Electronics Corp. APE8970/A
MARKING INFORMATION
SO-8
TO-263
TO-252
SOT-223
8
8970XS-&&
YWWSSS
8970XH-&&
YWWSSS
8970XK-&&
YWWSSS
Part Number
Pin assignment
Package Code
Output Voltage
Date Code (YWWSSS)
Y:Year
WW：Week
SSS：Sequence
Date Code (YWWSSS)
Y:Year
WW：Week
SSS：Sequence
Part Number
Pin assignment
Package Code
Output Voltage
Part Number
Pin assignment
Package Code
Output Voltage
Date Code (YWWSSS)
Y:Year
WW：Week
SSS：Sequence
8970XM-&&
YWWSSS Date Code (YWWSSS)
Y:Year
WW：Week
SSS：Sequence
Part Number
Pin assignment
Package Code
Output Voltage
Advanced Power
Electronics Corp. APE8970/A
MARKING INFORMATION
SOT-89
9
8970 X X
YWWS
Part Number
Pin assignment
Output Voltage
Date Code (YWWS)
Y:Year
WW：Week
S：Sequence
V
OUT
Identification
Code V
OUT
Identification
Code V
OUT
Identification
Code
1.2V B 2.5V F3.8V l
1.3V n 2.6V f3.9V e
1.4V t 2.7V w4.0V L
1.5V C 2.8V G4.1V V
1.6V S 2.9V h4.2V r
1.7V X 3.0V H4.3V R
1.8V D 3.1V x4.4V W
1.9V a 3.2V U4.5V M
2.0V E3.3V I4.6V u
2.1V b3.4V j4.7V y
2.2V O3.5V N4.8V Z
2.3V v3.6V K4.9V z
2.4V T3.7V Y5.0V J