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
µ
F 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.
V
in
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 V
I
60 Vdc
Transient Reverse Polarity Input V oltage
1.0% Duty Cycle, τ ≤ 100 ms
–VI(τ) –50 Vpk
Switch/Reset Input Current I
in
5.0 mA
Power Dissipation
Case 314A, 314B and 314D (TO–220 Type)
TA = 25°C P
D
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 P
D
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 T
J
–40 to +150 °C
Storage Temperature Range T
stg
–65 to +150 °C
ELECTRICAL CHARACTERISTICS (V
in
= 14 V, IO = 500 mA, I
stby
= 0 mA, CO = 10 µF, C
stby
= 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) V
O
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
Reg
line
–
–
4.0
10
25
50
mV
Load Regulation (IO = 5.0 mA to 500 mA) Reg
load
– 10 50 mV
Output Impedance
IO = 500 mAdc and 10 mArms, f = 100 Hz to 10 kHz
Z
O
– 200 –
mΩ
Output Noise Voltage (f = 10 Hz to 100 kHz) V
n
– 100 – µVrms
Long Term Stability S – 20 – mV/kHR