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New Japan Radio
New Japan Radio

78LR05 Datasheet

Search -----> NJM78LR05


78LR05 Datasheet Preview


NJM78LR05
SERIES REGULATOR WITH RESET FUNCTION
GENERAL DESCRIPTION
The NJM78LR05 is a series regulator with reset
function.
In case of shut down or output voltage drop, the IC
generates reset signal to a microcomputer.
That is suitable for items with microcomputer, such
as TV sets, remote controller, refrigerator and others.
PACKAGE OUTLINE
NJM78LR05BD / CD / DD NJM78LR05BM / CM / DM
FEATURES
Output Current
IO=150mA max.
Reset Function Including
Reset Delay Time can be Adjusted
NJM78LR05BL / CL / DL
by an External Capacitance.
Internal Over Current Protection
Thermal Shut Down
Bipolar Technology
package Outline DIP8, DMP8, SIP8, SOT-89 (5Pin)
NJM78LR05BU / CU / DU
RESET THRESHOLD VOLTAGE LINE-UP
Reset Threshold Voltage
Version
Part Number
4.0V D NJM78LR05DX
4.2V C NJM78LR05CX
4.3V B NJM78LR05BX
“X” is package suffix.
BLOCK DIAGRAM
Ver.2009-05-18
-1-
Page 1

NJM78LR05
PIN CONFIGURATION
NJM78LR05BD / CD / DD
NJM78LR05BM / CM / DM
NJM78LR05BL / CL / DL
NJM78LR05BU / CU / DU
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
VIN
Power Dissipation
PD
Operating Temperature Range
Storage Temperature Range
*At on PC board.
Topr
Tstg
MAXIMUM RATINGS
+20
(DIP-8) 500
(DMP8) 500*
(SIP8) 800
(SOT-89) 350
-40 to +85
-50 to +150
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
Input Voltage
Output Current
VIN
IO
CONDITIONS
7.5 to 18
1 to 100
PIN FUNCTION
1. INPUT
2. NC
3. Cd
4. NC
5. GND
6. RESET-OUTPUT
7. NC
8. OUTPUT
PIN FUNCTION
1. Cd
2. GND
3. RESET-OUTPUT
4. OUTPUT
5. INPUT
(Ta=25°C)
UNIT
V
mW
°C
°C
(Ta=25°C)
UNIT
V
mA
-2-
Ver.2009-05-18
Page 2

NJM78LR05
ELECTRICAL CHARACTERISTICS
[Power Supply Block]
(VIN=10V, IO=40mA, CIN=1µF, CO=10µF, Ta=25°C)
PARAMETER
SYMBOL
CONDITIONS
MIN. TYP. MAX. UNIT
Output Voltage
Quiescent Current
Output Short Current
Line Regulation 1
Line Regulation 2
Load Regulation 1
Load Regulation 2
Ripple Rejection
Output Noise Voltage
Dropout Voltage
VO
IQ
IOSC
VO / VIN1
VO / VIN2
VO / IO1
VO / IO2
RR
VNO
VI-O
IO=1mA
IO=100mA
OUTPUT-GND short
7V VIN 18V
8V VIN 18V
IO=1 to 100mA
IO=1 to 40mA
f=120Hz, ein=1VP-P, VIN=8 to 18V
10Hz f 100kHz, IO=1mA
4.80 5.00 5.20
V
- 1.40 3.40 mA
150 300 450 mA
- 6.0 65.0 mV
- 3.0 42.0 mV
- 9.0 60.0 mV
- 3.0 30.0 mV
- 79 - dB
- 80 - µV
- 1.5 2.2 V
[Reset Block]
(H) Reset Output Voltage
(L) Reset Output Voltage
Reset Threshold Voltage
VORH
VORL
VRT
VIN=3V, IO=1mA
B Version
C Version
4.80 5.00 5.20
V
- 10 200 mV
4.12 4.30 4.48
V
4.03 4.20 4.37
D Version
3.84 4.00 4.16
Reset Threshold Hysteresis Voltage
Reset Output Delay Time
VRTH
td
Cd=0.1µF
50 100 200 mV
7.50 10.0 12.5 ms
Ver.2009-05-18
-3-
Page 3

NJM78LR05
APPLICATION CIRCUIT
td [ms] = 100×Cd [µF]
Note 1 : When the capacitance Cd is too large, the actual delay time is shorter than the calculated result because an
electrical charge of Cd is discharged incompletely.
Solution of above problem :
(1) Connect SBD between output terminal and Cd terminal. Please refer to the fallowing circuit.
(2) Select larger capacitance, CIN than Cd.
-4-
Ver.2009-05-18
Page 4
Part Number 78LR05
Manufactur New Japan Radio
Description Search -----> NJM78LR05
Total Page 8 Pages
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