NTE NTE7124 Datasheet
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, V
Reset Pin Supply Voltage, V
Allowable Power Dissipation, P
No Fin 1.75W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T
C = +25°C 20W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
Storage Temperature Range, T
max 35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IN
reset 35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
dmax
opr
stg
–30° to +80°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Input Voltage V
Output Current I
IN
O
7.5 – 20.0 V
5 – 500 mA
Electrical Characteristics: (TA = +25°C, VIN = 10V, IO = 0.35A, CO = 10µF unless otherwise
specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage VO1 TJ = +25°C 4.8 5.0 5.2 V
VO2 7V ≤ VIN ≤ 20V, 5mA ≤ IO ≤ 0.35A 4.75 – 5.25 V
Line Regulation
LN1
LN2
∆V
O
TJ = +25°C,
IO = 0.2A
7V ≤ VIN ≤ 20V – 1.0 100 mV
8V ≤ VIN ≤ 20V – 0.5 50 mV
Electrical Characteristics (Cont’d): (TA = +25°C, VIN = 10V, IO = 0.35A, CO = 10µF unless
otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Load Regulation
LD1
TJ = +25°C
LD2 5mA ≤ IO ≤ 0.2A – 1.5 50 mV
5mA ≤ IO ≤ 0.5A – 3.0 100 mV
Current Dissipation I
CC
TJ = +25°C – 3.4 6.0 mA
Current Dissipation Variation
Line (LN)
∆I
8V ≤ VIN ≤ 25V, IO ≤ 0.2A – – 0.8 mA
CC
Load (LD) 5mA ≤ IO ≤ 0.35A – – 0.5 mA
Output Noise Voltage V
NO
Ripple Rejection RR IO = 0.1A
Dropout Voltage V
Peak Output Current I
Short–Circuit Current I
Temperature Coefficient of
drop
OP
OSC
∆VO/∆T IO = 5mA, TJ = +25° to +125°C – –0.3 – mV/°C
IO = 5mA, 10Hz ≤ f ≤ 100kHz – 60 – µV
62 80 – dB
62 77 – dB
IO = 0.3A
TJ = +25°C, f = 120Hz,
8V ≤ VIN ≤ 18V
– 2.0 2.5 V
TJ = +25°C – 1.1 – A
TJ = +25°C, VIN = 35V – 0.02 – A
Output Voltage
’L’ Reset Output Voltage V
Reset Threshold Voltage V
Reset Hysteresis Voltage V
Reset Output Delay Time t
ORL
RT
RTHIO
VO ≤ 4.5V, IO = 5mA – – 0.2 V
IO = 5mA V
O
–0.3
–0.2
V
O
= 5mA – 100 – mV
Cd = 0.1µF, IO = 5mA – 10 – ms
d
Pin Connection Diagram
(Front View)
– V
Input
Delay Capacitor
Output
Reset Out
GND
Loading...