2.85 TO 12 VOLT FIXED POSITIVE
LOCAL VOLTAGE REGULATOR
ISSUE 3 - DECEMBER 2001
DEVICE DESCRIPTION
The ZR78L Series three terminal fixed positive
voltage regulators feature internal circuit
current limit and thermal shutdown making
the devices difficult to destroy. The circuit
design allows creation of any custom voltage
in the range 2.85 to 12 volts. The devices are
available in a small outline surface mount
package, ideal for applications where space
saving is important, as well as through hole
TO92 style packaging. The devices are suited
to local voltage regulation applications, where
problems could be encountered with
distributed single source regulation, as well as
more general voltage regulation applications.
The ZR78L Series show performance
characteristics superior to other local voltage
regulators. The initial output voltage is
maintained to within 2.5% with a quiescent
current of typically 350µA. Output voltage
change, with input voltage and load current, is
much lower than competitive devices. The
ZR78L devices are completely stable with no
external components. The device will shut
down under thermal overload conditions but
as the device cools, regulation will restart.
FEATURES
•Small outline SOT223 package
•SO8 package (3.3V and 5.0V)
•TO92 package
•2.85 to 12 Volt
•Output current up to 200mA
•Tight initial tolerance
•Low quiescent current
•-55 to 125°C temperature range
•No external components
•Internal thermal shutdown
•Internal short circuit current limit
VOLTAGE RANGE
ZR78L028 2.85V
ZR78L03 3.0V
ZR78L033 3.3V
ZR78L04 4.0V
ZR78L048 4.85V
ZR78L05 5.0V
ZR78L052 5.2V
ZR78L057 5.7V
ZR78L06 6.0V
ZR78L07 7.0V
ZR78L08 8.0V
ZR78L085 8.5V
ZR78L09 9.0V
ZR78L10 10.0V
ZR78L12 12.0V
ZR78L
SERIES
4-200
ZR78L
SERIES
ZR78L028 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=6.85V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 2.78 2.85 2.92 V
IO=1 to 200mA τ2.736 2.964 V
Vin=4.85 to 20V
IO=1 to 100mA τ2.736 2.964 V
∆VOLine Regulation Vin=4.85 to 20V 10 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
5
2
25 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=4.85 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 75 µV rms
∆Vin /∆VORipple Rejection Vin=5.85 to 18V
f=120Hz 48 62 dB
Vin Input Voltage Required To
Maintain Regulation 4.85 4.55 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.1 mV/°C
τ=Tj=-55 to 125°C
ELECTRICAL CHARACTERISTICS:
Notes:
1. The maximum operating input voltage and
output current of the device will be governed by
the maximum power dissipation of the selected
package. Maximum package power dissipation is
specified at 25 °C and must be linearly derated to
zero at Tamb
=125°C.
2. The following data represents pulse test
conditions with junction temperatures as
indicated at the initiation of the test. Continuous
operation of the devices with the stated conditions
might exceed the power dissipation limits of the
chosen package.
3. Maximum power dissipation, for the SOT223
and SO8 packages, is calculated assuming that the
device is mounted on a PCB measuring 2 inches
square.
4. The shut down feature of the device operates if
its temperature exceeds its design limit as might
occur during external faults, short circuits etc. If the
regulator is supplied from an inductive source
then a large voltage transient, on the regulator
input, can result should the shut down circuit
operate. It is advised that a capacitor (1µF or
greater) should be applied across the regulator
input to ensure that the maximum voltage rating
of the device is not exceeded under shutdown
conditions.
ABSOLUTE MAXIMUM RATING
Input voltage 20V
Output Current(Io) 200mA
Operating Temperature -55 to 125°C
Storage Temperature -65 to 150°C
Power Dissipation (Tamb=25°C)
SOT223 2W(Note 3)
TO92 600mW
S08 780mW(Note 3)
ZR78L03 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=7V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 2.92 3.0 3.08 V
IO=1 to 200mA τ2.88 3.12 V
Vin=5 to 20V
IO=1 to 100mA τ2.88 3.12 V
∆VOLine Regulation Vin=5 to 20V 1040mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
5
2
25 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=5 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 75 µV rms
∆Vin /∆VORipple Rejection Vin=6 to 18V
f=120Hz 48 62 dB
Vin Input Voltage Required To
Maintain Regulation 5 4.7 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.1 mV/°C
ZR78L033 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=7.3V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 3.218 3.3 3.382 V
IO=1 to 200mA τ3.168 3.432 V
Vin=5.3 to 20V
IO=1 to 100mA τ3.168 3.432 V
∆VOLine Regulation Vin=5.3 to 20V 7.5 30 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
5
2
25 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=5.3 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 50 µV rms
∆Vin /∆VORipple Rejection Vin=6.3 to 18V
f=120Hz 50 64 dB
Vin Input Voltage Required To
Maintain Regulation 5.3 5 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ 0.1 mV/°C
τ =Tj = -55 to 125 °C
ZR78L
SERIES
ZR78L04 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=8V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 3.9 4.0 4.1 V
IO=1 to 200mA τ3.84 4.16 V
Vin=6 to 20V
IO=1 to 100mA τ3.84 4.16 V
∆VOLine Regulation Vin=6 to 20V 1040mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
5
2
25 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=6 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 75 µV rms
∆Vin /∆VORipple Rejection Vin=7 to 18V
f=120Hz
48 62 dB
Vin Input Voltage Required To
Maintain Regulation
65.3 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.1 mV/°C
ZR78L
SERIES
ZR78L048 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=8.85V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 4.729 4.85 4.971 V
IO=1 to 200mA τ4.656 5.044 V
Vin=6.8 to 20V
IO=1 to 100mA τ4.656 5.044 V
∆VOLine Regulation Vin=6.85 to 20V 10 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
5
2
25 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=6.85 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 50 µV rms
∆Vin /∆VORipple Rejection Vin=7.85 to 18V
f=120Hz
50 64 dB
Vin Input Voltage Required To
Maintain Regulation
6.85 6.55 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.1 mV/°C
τ =Tj = -55 to 125°C
ZR78L12TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=16V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 11.7 12 12.3 V
IO=1 to 200mA τ11.52 12.48 V
Vin=14 to 20V
IO=1 to 100mA τ11.52 12.48 V
∆VOLine Regulation Vin=14 to 20V 12 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
9
3
30 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=14 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 150 µV rms
∆Vin /∆VORipple Rejection Vin=15 to 18V
f=120Hz 43 57 dB
Vin Input Voltage Required To
Maintain Regulation 14 13.7 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.25
mV/°C
τ =Tj = -55 to 125 °C
ZR78L
SERIES
ZR78L10TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=14V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 9.75 10 10.25 V
IO=1 to 200mA τ9.6 10.4 V
Vin=12 to 20V
IO=1 to 100mA τ9.6 10.4 V
∆VOLine Regulation Vin=12 to 20V 12 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
9
3
30 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=12 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 150 µV rms
∆Vin /∆VORipple Rejection Vin=13 to 18V
f=120Hz 43 57 dB
Vin Input Voltage Required To
Maintain Regulation 12 11.7 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.25
mV/°C
-50 -25 025 50 75 100 125
Temperature ( C)
0
Short-Circuit Output Current (mA)
Peak Output Current vs. Temperature
500
400
300
200
100
0
-50 -25 0 25 50 75 100 125
Temperature ( C)
Io=100mA
Io=200mA
2.5
2.0
1.5
1.0
0.5
0
Drop-Out Voltage (V)
0
Drop-Out Voltage vs. Temperature
-50 -25 025 50 75 100 125
Temperature ( C)
0
450
400
350
300
250
Quiescent Current (uA)
Quiescent Current vs. Temperature
Io= 0
Vin=Vo+ 4V
-50 -25 025 50 75 100 125
Temperature ( C)
Output Voltage (V)
Output Voltage Temperature Coefficient
9.08
9.04
9.00
8.96
8.92
0
Vin= Vo+ 4V
Io= 5mA
-50 -25 025 50 75 100 125
2.85
2.82
Temperature ( °C)
Output Voltage (V)
Output Voltage Temperature Coefficient
2.84
2.86
5.70
5.66
-50 -25 025 50 75 100 125
Temperature ( °C)
Output Voltage (V)
Output Voltage Temperature Coefficient
4.00
3.96 ZR78L04
ZR78L057
3.98
3.94
5.68
5.72
ZR78L09
2.99
3.00
3.01
2.98
ZR78L028
ZR78L03
Io= 5mA
Vin= Vo+ 4V
Io= 5mA
Vin= Vo+ 4V
Vo=0
Vin=10V
TYPICAL CHARACTERISTICS
ZR78L028 ZR78L03
ZR78L04 ZR78L057
ZR78L09
ZR78L
SERIES
-50 -25 025 50 75 100 125
Temperature (° C)
Short-Circuit Output Current (mA)
Peak Output Current v Temperature
500
400
300
200
100
0
-50 -25 025 50 75 100 125
Temperature (° C)
IO= 100mA
IO= 200mA
2.5
2.0
1.5
1.0
0.5
0
Drop-Out Voltage (V)
Drop-Out Voltage v Temperature
-50 -25 025 50 75 100 125
Temperature (° C)
450
400
350
300
250
Quiescent Current (uA)
Quiescent Current v Temperature
-50 -25 025 50 75 100 125
Temperature (° C)
Output Voltage (V)
Output Voltage Temperature Coefficient
10.08
10.04
10.00
9.96
9.92
Vin =V
O+4V
3.30
3.28
ZR78L033
-50 -25 025 50 75 100 125
5.00
4.98
Temperature (° C)
Output Voltage (V)
Output Voltage Temperature Coefficient
ZR78L05
3.27
3.29
4.99
5.01
8.00
7.96
-50 -25 025 50 75 100 125
Temperature (° C)
Output Voltage (V)
Output Voltage Temperature Coefficient
6.00
5.96
ZR78L06
ZR78L08
5.98
5.94
7.98
8.02
ZR78L10 IO=5mA
Vin =V
O+4V
IO=5mA Vin =V
O+4V
IO=5mA
Vin =V
O+4V
IO=0
Vin = 10V
IO=0
TYPICAL CHARACTERISTICS
ZR78L033 ZR78L05
ZR78L06 ZR78L08
ZR78L10
ZR78L
SERIES
ZR78L057 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=9.7V
SYMBOL PARAMETER CONDITIONS MIN. Typ. MAX. UNITS
VOOutput Voltage 5.557 5.7 5.843 V
IO=1 to 200mA τ5.47 5.93 V
Vin=7.7 to 20V
IO=1 to 100mA τ 5.47 5.93 V
∆VOLine Regulation Vin=7.7 to 20V 10 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
7
2.5
30 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=7.7 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 90 µV rms
∆Vin /∆VORipple Rejection Vin=8.7 to 18V
f=120Hz 48 62 dB
Vin Input Voltage Required To
Maintain Regulation 7.7 7.4 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.15
mV/°C
ZR78L06 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=10V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 5.85 6 6.15 V
IO=1 to 200mA τ5.76 6.24 V
Vin=8 to 20V
IO=1 to 100mA τ5.76 6.24 V
∆VOLine Regulation Vin=8 to 20V 10 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
7
2.5
30 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=8 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 90 µV rms
∆Vin /∆VORipple Rejection Vin=9 to 18V
f=120Hz 48 62 dB
Vin Input Voltage Required To
Maintain Regulation 8 7.7 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.15 mV/°C
τ =Tj = -55 to 125 °C
ZR78L
SERIES
ZR78L052 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=9.2V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 5.070 5.2 5.330 V
IO=1 to 200mA τ4.99 5.41 V
Vin=7.2 to 20V
IO=1 to 100mA τ4.99 5.41 V
∆VOLine Regulation Vin=7.2 to 20V 10 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
5
2
25 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=7.2 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 75 µV rms
∆Vin /∆VORipple Rejection Vin=8.2 to 18V
f=120Hz 48 62 dB
Vin Input Voltage Required To
Maintain Regulation 7.2 6.9 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.1 mV/°C
τ =Tj = -55 to 125 °C
ZR78L05 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=9V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 4.875 5 5.125 V
IO=1 to 200mA τ4.8 5.2 V
Vin=7 to 20V
IO=1 to 100mA τ4.8 5.2 V
∆VOLine Regulation Vin=7 to 20V 10 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
5
2
25 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=7 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 75 µV rms
∆Vin /∆VORipple Rejection Vin=8 to 18V
f=120Hz 48 62 dB
Vin Input Voltage Required To
Maintain Regulation 7 6.7 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.1 mV/°C
ZR78L
SERIES
ZR78L09TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=13V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 8.775 9.0 9.225 V
IO=1 to 200mA τ8.64 9.36 V
Vin=11 to 20V
IO=1 to 100mA τ8.64 9.36 V
∆VOLine Regulation Vin=11 to 20V 12 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
9
3
30 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=11 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 150 µV rms
∆Vin /∆VORipple Rejection Vin=12 to 18V
f=120Hz 43 57 dB
Vin Input Voltage Required To
Maintain Regulation 11 10.7 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.25
mV/°C
τ =Tj = -55 to 125°C
ZR78L
SERIES
ZR78L085 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=12.5V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 8.288 8.5 8.712 V
IO=1 to 200mA τ8.16 8.84 V
Vin=10 to 20V
IO=1 to 100mA τ8.16 8.84 V
∆VOLine Regulation Vin=10.5 to 20V 11 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
8
3
30 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=10.5 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 115 µV rms
∆Vin /∆VORipple Rejection Vin=11.5 to 18V
f=120Hz 44 60 dB
Vin Input Voltage Required To
Maintain Regulation 10.5 10.2 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.25
mV/°C
TYPICAL CHARACTERISTICS
Thermal Resistance (°C/W)
1m 10m 100m 10
1
0
8
16
24
32
40
48
D=0
D=0.05
D=0.1
D=0.2
D=0.5
D=1
Pulse Width(s)
Thermal Resistance v Pulse Width Thermal Resistance v Pulse Width
Thermal Resistance (°C/W)
SOT223 PACKAGE
01020
30 40 50
-1.0
-0.5
0
+0.5
OUTPUT VOLTAGE
DEVIATION
Time (us)
Line Transient Response
Output Voltage Deviation (V)
INPUT VOLTAGE
IO= 100mA
COUT = 0
dVIN /dt = 5V/µs
(V + 9)
(V + 4)
O
O
01020
30 40 50
-1.0
-0.5
0
+0.5
0
OUTPUT VOLTAGE
DEVIATION
LOAD CURRENT
Time (us)
Output Voltage Deviation (V)
Load Transient Response
V IN = Vo+ 4V
COUT= 0
dIo/dt = 1A/µs
100 mA
0
10
20
30
40
50
60
70
80
90
10 100 1K 10K 100K
Ripple Frequency (Hz)
Ripple Rejection (dB)
Io= 100mA
Vin = Vout + 3V
DVin = 200mV p/p
Output Impedance vs. Frequency Ripple Rejection vs. Ripple Frequency
Output Impedance (Ohms)
Pulse Width (s)
0
20
40
60
80
100
120
140
160
D=0
D=0.05
D=0.1
D=0.2
D=0.5
D=1
TO92 PACKAGE
10m 100m 101m 1
0
100 1K 10K 100K
10
1.0
0.1
0.01
Frequency (Hz)
Output Impedance (Ohms)
Io= 100mA
VIN = VOUT+ 4V
ZR78L09
ZR78L057
ZR78L04
ZR78L028
ZR78L03
ZR78L028
ZR78L03
ZR78L04
ZR78L09
ZR78L057
ZR78L028 ZR78L03
ZR78L04 ZR78L057
ZR78L09
ZR78L
SERIES
10 100 10
1ms 1s
0
20
40
60
80
100
120
140
160
D=0
D=0.05
D=0.1
D=0.2
D=0.5
D=1
Thermal Resistance ( C/W)
Pulse Width
Thermal Resistance v Pulse Width
TO92 PACKAGE
01020
30 40 50
-1.0
-0.5
0
+0.5
OUTPUT VOLTAGE
DEVIATION
Time (µs)
Line Transient Response
Output Voltage Deviation (V)
INPUT VOLTAGE
Io=100mA
COUT=0
dVIN/dt =5V/us
(Vo + 9)
(Vo+ 4)
01020
30 40 50
-1.0
-0.5
0
+0.5
0
OUTPUT VOLTAGE
DEVIATION
LOAD CURRENT
Time (µs)
Output Voltage Deviation (V)
Load Transient Response
V = V + 4V
C = 0
dI /dt =1A/µs
IN O
OUT
O
100 mA
0
10
20
30
40
50
60
70
80
90
10 100 1K 10K 100K
Ripple Frequency (Hz)
Ripple Rejection (dB)
Io = 100mA
Vin = Vout + 3V
∆Vin = 200mV p/p
100 1K 10K 100K
10
1.0
0.1
0.01
Output Impedance (Ohms)
Frequency (Hz)
IO=100mA
VIN =VOUT+4V
Output Impedance v Frequency Ripple Rejection v Ripple Frequency
TYPICAL CHARACTERISTICS
ZR78L10
ZR78L08
ZR78L06
ZR78L05
ZR78L033
10 100 10
1ms 1s
0
8
16
Thermal Resistance ( C/W)
Pulse Width
Thermal Resistance v Pulse Width
24
32
40
48
ZR78L10
ZR78L08
ZR78L06
ZR78L05
ZR78L033
SOT223 PACKAGE
ZR78L
SERIES
ZR78L033 ZR78L05
ZR78L06 ZR78L08
ZR78L10
ZR78L08 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=12V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 7.8 8 8.2 V
IO=1 to 200mA τ7.68 8.32 V
Vin=10 to 20V
IO=1 to 100mA τ7.68 8.32 V
∆VOLine Regulation Vin=10 to 20V 11 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
8
3
30 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=10 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 115 µV rms
∆Vin /∆VORipple Rejection Vin=11 to 18V
f=120Hz 44 60 dB
Vin Input Voltage Required To
Maintain Regulation 10 9.7 V
∆VO /∆TAverage Temperature
Coefficient of VO
IO=5.0mA τ0.25
mV/°C
τ =Tj = -55 to 125°C
ZR78L07 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=11V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS
VOOutput Voltage 6.825 7 7.175 V
IO=1 to 200mA τ6.72 7.28 V
Vin=9 to 20V
IO=1 to 100mA τ6.72 7.28 V
∆VOLine Regulation Vin=9 to 20V 10 40 mV
∆VOLoad Regulation IO=1 to 200mA
IO=1 to 100mA
5
2
25 mV
mV
lqQuiescent Current τ350 600 µA
∆lqQuiescent Current Change IO=1 to 200mA
Vin=9 to 20V
100
100 µA
µA
VnOutput Noise Voltage f=10Hz to 10kHz 75 µV rms
∆Vin /∆VORipple Rejection Vin=10 to 18V
f=120Hz 48 62 dB
Vin Input Voltage Required To
Maintain Regulation 9 8.7 V
∆VO /∆TAverage Temperature
Coefficient of VOIO=5.0mA τ0.1 mV/°C
ZR78L
SERIES
TYPICAL CHARACTERISTICS
ZR78L048 ZR78L052
ZR78L07 ZR78L085
ZR78L12
Output Voltage Temperature Coefficient
Temperature (°C)
025 7550
Output Voltage (V)
-50 -25 100125
4.90
5.15
5.20
5.25
4.80
4.85
Io = 10mA
Vin = Vout + 4v
ZR78L052
ZR78L048
Output Voltage Temperature Coefficient
Temperature (°C)
025 7550
Output Voltage (V)
-50 -25 100125
7.10
8.55
8.45
8.50
6.90
7.00
Io = 10mA
Vin = Vout + 4v
ZR78L085
ZR78L07
Output Voltage Temperature Coefficient
Temperature (°C)
025 7550
Output Voltage (V)
-50 -25 100125
12.10
12.00
11.90
12.05
11.95
Io = 10mA
Vin = Vout + 4v
ZR78L12
Quiescent Current v Temperature
Temperature (°C)
025 7550
Quiescent Current (uA)
-50 -25 100125
500
450
400
350
300
Io=0
Vin=Vout+4v
Peak Output Current v Temperature
Temperature (°C)
025 7550
0
Short-circuit Output Current (mA)
100
500
400
300
200
-50 -25 100125
Vo= 0
Vin= 10v
Drop-Out Votlage v Temperature
Temperature (°C)
025 7550
0
Drop-Out Voltage (V)
0.5
2.5
2.0
1.5
1.0
-50 -25 100125
Io= 200mA
Io= 100mA
ZR78L
SERIES
SO8 Package Suffix – N8
Top View
TO92 Package Suffix – C
Bottom View
SOT223 Package Suffix – G
Top View –
Connect pin 4 to pin 2 or leave pin 4
electrically isolated
CONNECTION DIAGRAMS
Part No Package Partmark
ZR78L s C TO92 ZR78L s
ZR78L s G SOT223 ZR78L s
ZR78L s N8 SO8 ZR78L s
s Voltage Option
eg 3V device in TO92 package
part number ZR78L03C
part marked ZR78L03
eg 12V device in SOT223 package
part number ZR78L12G
part marked ZR78L12
eg 5V device in SO8 package
part number ZR78L05N8
part marked ZR78L05
OPTIONS
ORDERING INFORMATION
Voltage Voltage
Options
TO92 SOT223 SO8
2.85V 028 33
3.0V 03 33
3.3V 033 33 3
4.0V 04 33
4.8V 048 33
5.0V 05 33 3
5.2V 052 33
5.7V 057 33
6.0V 06 33
7.0V 07 33
8.0V 08 33
8.5V 085 33
9.0V 09 33
10.0V 10 33
12.0V 12 33
ZR78L
SERIES
4-217
ZR78L
SERIES
Line Transient Response
Time (µs)
20 30 5040
Output Voltage Deviation (V)
+0.2
0
010
-0.2
Vo+4
Vo+9
Io= 100mA
Cout= 0
dVin/dt= 5v/us
Input Voltage
Output Voltage
Deviation
Load Transient Response
Time (us)
20 30 5040
Output Voltage Deviation (V)
+0.2
0
010
-0.2
0
100mA Load Current
Output Voltage
Deviation
Vin= Vout+4v
Cout= 0
dIo/dt= 1A/us
Thermal Resistance v Pulse Width
Pulse Width (s)
1m 100m
Thermal Resistance (°C/W)
0
60
110
10m
20
40
80
100
120
140
160 D=1
D=0.5
D=0.2
D=0.1
D=0.05
D=0
TO92 PACKAGE
Thermal Resistance v Pulse Width
Pulse Width (s)
1m 100m
Thermal Resistance (°C/W)
0
24
110
10m
8
16
32
40
48
SOT223 PACKAGE
D=1
D=0.5
D=0.2
D=0.1
D=0.05
D=0
Output Impedance v Frequency
Frequency (Hz)
10 1k
Output Impedance (Ohms)
0.01
10
10k 100k
100
0.1
1
Io= 100mA
Vin= Vout+4v
ZR78L12
ZR78L085
ZR78L07
ZR78L052
ZR78L048
Ripple Rejection v Ripple Frequency
Frequency (Hz)
100 10k
Open Loop Gain (dB)
0
50
100k 1M
1k
40
30
20
10
70
60
80
90
ZR78L048
ZR78L052
ZR78L07
ZR78L085
ZR78L12
Io= 100mA
Vin= Vout+4v
Vin= 200mV Pk/Pk
TYPICAL CHARACTERISTICS
ZR78L048 ZR78L052
ZR78L07 ZR78L085
ZR78L12
THERMAL CHARACTERISTICS
ZR78L
SERIES
Thermal Resistance v Pulse Width
Pulse Width (s)
1m 100m
Thermal Resistance (°C/W)
0
60
11010m
20
40
80
100
120
140
160
SO8 PACKAGE
D=0.2
D=0.1
D=0.05
D=0
Power dissipation Derating
Ambient Temperature (°C)
-50 0
Maximum Power Dissipation (W)
0
1.0
25 50
-25
0.8
0.6
0.4
0.2
1.4
1.2
1.6
1.8
75 100125
2.0 SOT223
SO8
TO92
100µ 100
D=1
D=0.5
Q14
Q16 Q17
Q11
R7 R4
R3
Q18 Q19
R5
Q20
Q13
Q25
Q4
Q5
Q1
R1 Q3
C1
Q6 Q7
R2
Q8
R14
Q10
R9
R13
Vin
Vout
Gnd
R6
Q9
Q12
Q21
SCHEMATIC DIAGRAM
APPLICATIONS
Fixed Output Regulator Adjustable Output Regulator
Input Output
Gnd
ZR78L*** Input Output
Gnd
ZR78L***
R1
R2
Iq
Vo= Vreg + (Vreg/R1 + Iq)R2
Current Regulator
Input
Output
ZR78L***
R1
Iq
Io= (Vreg/R1) + Iq
ZR78L
SERIES
