LM2935

2

MOTOROLA ANALOG IC DEVICE DATA

*The main output

is “Off” with switch

S1 open.

An input bypass capacitor is recommended if the regulator is located more than 4

″ from 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.

Vin

S1*

0.1

Input

Switch/

Reset

Gnd

3

1

4

Standby

Main

Output

2

20 k

LM2935

5.0 V/750 mA

+

10

Typical Application Circuit

This device contains 29 active transistors.

5

5.0 V/10 mA

+

10

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Input Voltage Continuous

VI

60

Vdc

Transient Reverse Polarity Input Voltage

1.0% Duty Cycle,

τ ≤ 100 ms

–VI(τ)

–50

Vpk

Switch/Reset Input Current

Iin

5.0

mA

Power Dissipation

Case 314A, 314B and 314D (TO–220 Type)

TA = 25°C

PD

Internally Limited

W

Thermal Resistance, Junction–to–Ambient

R

θJA

65

°C/W

Thermal Resistance, Junction–to–Case

R

θJC

5.0

°C/W

Case 936A (D2PAK)

TA = 25°C

PD

Internally Limited

W

Thermal Resistance, Junction–to–Ambient

R

θJA

Per Figure 1

°C/W

Thermal Resistance, Junction–to–Case

R

θJC

5.0

°C/W

Operating Junction Temperature Range

TJ

– 40 to +150

°C

Storage Temperature Range

Tstg

– 65 to +150

°C

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

–

–

4.0

10

25

50

mV

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

–

200

–

m

Ω

Output Noise Voltage (f = 10 Hz to 100 kHz)

Vn

–

100

–

µVrms

Long Term Stability

S

–

20

–

mV/kHR