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PDF GM432 Data sheet ( Hoja de datos )
| Número de pieza | GM432 | |
| Descripción | 1.24V ADJUSTABLE PRECISION SHUNT REGULATORS | |
| Fabricantes | Gamma Microelectronics | |
| Logotipo |  |
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AA
MICROELECTRONICS
Power Management
GM432
1.24V ADJUSTABLE PRECISION SHUNT REGULATORS
Description
The GM432's are low-voltage three-terminal adjustable pre-
cision shunt regulators with specified thermal stability over
their full temperature range. Output voltage can be set to
any value from Vref (1.24V) to 16V by using two external
resistors. Their active output circuitry provides a very
unique turn-on characteristic, making them excellent re-
placements for zener diodes in many applications such as
onboard regulation and adjustable power supplies. In a
wide range of home applications, these versatile darlings
are ideal voltage references for 3.0V to 3.3V switching
power suppies. With operational cathode current as low as
80µA, batteries keep on going. Whatever your application
is, the GM432's offer the optimum combination of perfor-
mance, reliability, and economy.
Features
Low-voltage operation, down to 1.24V
0.5%, 1% or 2% reference voltage tolerance
Adjustable output voltage, VO = Vref to 16V
Sink Current Capability 80µA to 100mA
Low dynamic output impedance, 0.05W typical
Wide temperature range, 0° to +70°C
Pin-to-pin replacement for TLV431, SC431L
Available in SOT-23, SOT-25, SOT-89, TO-92
and SOP-8
Application
Switching power supplies
Linear regulators
Adjustable supplies
Instrumentation
LOGIC SYMBOL
REFERENCE
ANODE
CATHODE
Battery-operated computers,
PDA's portable devices
Monitors, TV's, camcorders
Computer disk drives
BLOCK DIAGRAM (POSITIVE LOGIC)
CATHODE
REFERENCE
+
_
Vref = 1.24V
ANODE
www.gammamicro.com 1
1 page  
AA
MICROELECTRONICS
Power Management
GM432
1.24V ADJUSTABLE PRECISION SHUNT REGULATORS
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
GM432C (2.0%)
PARAMETER
CONDITION
Reference input Voltage Vref
VKA = Vref, IK = 10 mA, TA = 25°C (1)
VKA=Vref,IK=10 mA,TA= 0 to +70°C(1)
Vref temp deviation
Vdev VKA = Vref, IK = 10 mA (1)
Ratio of change in Vref
to change in VKA
Reference input current
DVref IK = 10mA, DVKA = 16V to Vref
DVKA
Iref IK = 10mA, R1 = 10KW, R2 = (2)
Deviation of reference
input voltage over full
temperature range
Iref(dev)
IK = 10mA, R1 =
TA = full range
10KW, R2 =
(2)
Minimum operating
current
IK(min) VKA = Vref (1)
MIN
1.215
1.200
- 2.7
Off-state cathode
current
Dynamic impedance
IK(off)
VKA = 6V, Vref = 0V (3)
VKA = 16V, Vref = 0V (3)
| ZKA | f 1kHz,VKA=Vref, IK=100mA to 100mA (1)
NOTES:
(1) See test circuit 1.
(2) See test circuit 2.
(3) See test circuit 3.
TYP
1.240
10
MAX UNIT
1.265
1.280
V
35 mV
-1.0 mV/V
0.15 0.5 mA
0.1 0.4 mA
20 80 mA
0.125
0.135
0.05
0.150
0.150
0.15
mA
W
TEST CIRCUITS
VIN VKA
lk
Vref
VIN
R1
Vref
R2
lref
Vref
VKA
lref
VIN
VKA
lk(off)
Test Circuit 1
VKA = Vref
Test Circuit 2
VKA > Vref
Test Circuit 3
Off-State
5
5 Page 
AA
MICROELECTRONICS
Power Management
GM432
1.24V ADJUSTABLE PRECISION SHUNT REGULATORS
SOT-89 PACKAGE OUTLINE DIMENSIONS
R 0.13~4X
4.50 ± 0.05
1.650 REF
1.400 REF
1.50 ± 0.05
R 0.13~3X
NO DRAFT~2
Pad Layout
2
Units: mm
4.20 ± 0.05
2.5 ± 0.05
1.00 ± 0.07
1.50 1.50
6°~2X
3.00 ± 0.025
6°
0.46 ± 0.025
R 0.1 MAX
45°
0.38 ± 0.01
R 0.13~2X
1.5
0.7
1
6°~2X
R 0.13~2X
Unit: mm
TO-92 PACKAGE OUTLINE DIMENSIONS
4.6 ± 0.1
3.6 ± 0.15
2° 2°
4.6 ± 0.1
1.45 ± 0.1
2.3
3 - 0.46
2° 2°
14.5 ± 0.5
1.27 1.27
3.6 ± 0.15
1.3 ± 0.1
5°
5°
0.38 ± 0.015
Unit: mm
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet GM432.PDF ] | |
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