VOLTAGE REGULATOR. LM2935 Datasheet

LM2935 REGULATOR. Datasheet pdf. Equivalent

Part LM2935
Description LOW DROPOUT DUAL VOLTAGE REGULATOR
Feature Order this document by LM2935/D Low Dropout Dual Voltage Regulator The LM2935 is a dual positive 5..
Manufacture Motorola
Datasheet
Download LM2935 Datasheet



LM2935
Order this document by LM2935/D
Low Dropout
Dual Voltage Regulator
The LM2935 is a dual positive 5.0 V low dropout voltage regulator,
designed for standby power systems. The main output is capable of
supplying 750 mA for microprocessor power, and can be turned “on” and
“off” by the switch/reset input. The other output is dedicated for standby
operation of volatile memory, and is capable of supplying up to 10 mA loads.
The total device features a low quiescent current of 3.0 mA or less when
supplying 10 mA from the standby output.
This part was designed for harsh automotive environments and is
therefore immune to many input supply voltage problems such as reverse
battery (–12 V), double battery (+24 V), and load dump transients (+60 V).
Two Regulated 5.0 V Outputs
Main Output Current in Excess of 750 mA
On/Off Control of Main Output
Standby Output Current in Excess of 10 mA
Low Input/Output Differential of Less than 0.6 V at 500 mA
Short Circuit Current Limiting
Internal Thermal Shutdown
Low Voltage Indicator Output
Designed for Automotive Environment Including
Reverse Battery Protection
Double Battery Protection
Load Dump Protection
Reverse Transient Protection
Economical 5–Lead TO–220 Package with Two Optional Leadforms
Also Available in Surface Mount D2PAK Package
LM2935
LOW DROPOUT
DUAL VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
TH SUFFIX
PLASTIC PACKAGE
CASE 314A
1
5
1
5
TV SUFFIX
PLASTIC PACKAGE
CASE 314B
Heatsink surface connected to Pin 3.
T SUFFIX
PLASTIC PACKAGE
CASE 314D
1
5
Device
LM2935D2T
LM2935T
LM2935TH
LM2935TV
ORDERING INFORMATION
Operating
Temperature Range
Package
Surface Mount
TJ = –40° to +125°C
Plastic Power
Horizontal Mount
Vertical Mount
Pin 1. Input Voltage/VCC
2. Main Output
3. Ground
4. Switch/Reset
5. Standby/Output
1
5
D2T SUFFIX
PLASTIC PACKAGE
CASE 936A
(D2PAK)
Heatsink surface (shown as terminal 6
in case outline drawing) is connected to Pin 3.
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 1
1



LM2935
LM2935
Typical Application Circuit
Vin
S1*
*The main output
is “Off” with switch
S1 open.
0.1
20 k
Input
1
LM2935
4
Switch/
3
Reset
Gnd
Main
Output
2
+
10
Standby
5
+
10
5.0 V/750 mA
5.0 V/10 mA
An input bypass capacitor is recommended if the regulator is located more than 4from the supply
input filter. The LM2935 is not internally compensated and thus requires an external output capacitor
for stability. A minimum capacitance of 10 µF is recommended. The actual capacitance value is
dependent upon load current, temperature, and the capacitor’s equivalent series resistance (ESR).
The least stable condition is encountered at maximum load current and minimum ambient
temperature.
This device contains 29 active transistors.
MAXIMUM RATINGS
Rating
Input Voltage Continuous
Transient Reverse Polarity Input Voltage
1.0% Duty Cycle, τ 100 ms
Switch/Reset Input Current
Power Dissipation
Case 314A, 314B and 314D (TO–220 Type)
TA = 25°C
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 936A (D2PAK)
TA = 25°C
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Operating Junction Temperature Range
Storage Temperature Range
Symbol
VI
–VI(τ)
Iin
Value
60
– 50
5.0
Unit
Vdc
Vpk
mA
PD
RθJA
RθJC
PD
RθJA
RθJC
TJ
Tstg
Internally Limited
65
5.0
Internally Limited
Per Figure 1
5.0
– 40 to +150
– 65 to +150
W
°C/W
°C/W
W
°C/W
°C/W
°C
°C
ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 500 mA, Istby = 0 mA, CO = 10 µF, Cstby = 10 µF, TJ = 25°C [Note 1].)
Characteristic
Symbol Min Typ Max Unit
MAIN OUTPUT
Output Voltage (Vin = 6.0 V to 26 V, IO = 5.0 mA to 500 mA, TJ = – 40 to +125°C)
VO
4.75 5.0 5.25
V
Line Regulation
Vin = 9.0 V to 16 V, IO = 5.0 mA
Vin = 6.0 V to 26 V, IO = 5.0 mA
Regline
mV
– 4.0 25
– 10 50
Load Regulation (IO = 5.0 mA to 500 mA)
Regload
10 50
mV
Output Impedance
IO = 500 mAdc and 10 mArms, f = 100 Hz to 10 kHz
ZO m
– 200 –
Output Noise Voltage (f = 10 Hz to 100 kHz)
Vn – 100 – µVrms
Long Term Stability
S – 20 – mV/kHR
2 MOTOROLA ANALOG IC DEVICE DATA







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