NTE NTE7124

NTE7124
Integrated Circuit
Positive 5V Regulator w/Reset Function
Description:
The NTE7124 is a reset function–provided, general–purpose voltage regulator IC in a 5–Lead TO220
type package with output current 500mA designed for use in microcomputers.
Features:
D Reset Function (Power Supply Voltage Monitor: Generates a Reset Signal at a Power–ON
and Temporal Power–Down)
D On–Chip ASO Protector
D On–Chip Thermal Protector
D On–Chip Overcurrent Limiter
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Input Voltage, VINmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V
Reset Pin Supply Voltage, Vreset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V
Allowable Power Dissipation, Pdmax
No Fin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.75W
TC = +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20W
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +80°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Input Voltage
VIN
7.5
–
20.0
V
Output Current
IO
5
–
500
mA
Electrical Characteristics: (TA = +25°C, VIN = 10V, IO = 0.35A, CO = 10µF unless otherwise
specified)
Parameter
Output Voltage
Line Regulation
LN1
LN2
Symbol
Test Conditions
Min
Typ
Max
Unit
VO1
TJ = +25°C
4.8
5.0
5.2
V
VO2
7V ≤ VIN ≤ 20V, 5mA ≤ IO ≤ 0.35A
4.75
–
5.25
V
–
1.0
100
mV
–
0.5
50
mV
∆VO
TJ = +25°C, 7V ≤ VIN ≤ 20V
IO = 0.2A
8V ≤ VIN ≤ 20V
Electrical Characteristics (Cont’d): (TA = +25°C, VIN = 10V, IO = 0.35A, CO = 10µF unless
otherwise specified)
Parameter
Load Regulation
LD1
Symbol
Test Conditions
Min
Typ
Max
Unit
TJ = +25°C 5mA ≤ IO ≤ 0.5A
–
3.0
100
mV
5mA ≤ IO ≤ 0.2A
–
1.5
50
mV
LD2
Current Dissipation
ICC
TJ = +25°C
–
3.4
6.0
mA
Current Dissipation Variation
Line (LN)
Load (LD)
∆ICC
8V ≤ VIN ≤ 25V, IO ≤ 0.2A
–
–
0.8
mA
5mA ≤ IO ≤ 0.35A
–
–
0.5
mA
Output Noise Voltage
VNO
IO = 5mA, 10Hz ≤ f ≤ 100kHz
–
60
–
µV
Ripple Rejection
RR
IO = 0.1A
62
80
–
dB
62
77
–
dB
–
2.0
2.5
V
IO = 0.3A
Dropout Voltage
TJ = +25°C, f = 120Hz,
8V ≤ VIN ≤ 18V
Vdrop
Peak Output Current
IOP
TJ = +25°C
–
1.1
–
A
Short–Circuit Current
IOSC
TJ = +25°C, VIN = 35V
–
0.02
–
A
∆VO/∆T IO = 5mA, TJ = +25° to +125°C
–
–0.3
–
mV/°C
–
–
0.2
V
–
V
Temperature Coefficient of
Output Voltage
’L’ Reset Output Voltage
VORL
VO ≤ 4.5V, IO = 5mA
Reset Threshold Voltage
VRT
IO = 5mA
Reset Hysteresis Voltage
VRTH
IO = 5mA
–
100
–
mV
Reset Output Delay Time
td
Cd = 0.1µF, IO = 5mA
–
10
–
ms
VO–0.3 VO–0.2
Pin Connection Diagram
(Front View)
Input
Delay Capacitor
Output
Reset Out
GND
.408 (10.37
Max
0.45 (1.37) Max
.114 (2.9)
.619
(15.72)
Max
.896
(22.76)
Max
.364
(9.25)
Max
.850
(21.6)
Max
.135 (3.45)
.150 (3.81)
1
3
2
5
4
.182 (4.62) Max
.182
(4.62)