LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER

AP3700E

Data Sheet

5

BCD Semiconductor Manufacturing Limited

May 2008 Rev. 1. 1

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

UVLO SECTION

Start-up Voltage

5.5

5.75

5.95

V

Minimal Operating Voltage

3.6

3.8

4.0

V

STANDBY CURRENT SECTION

Start-up Current (Note 3)

0.22

0.45

mA

Operating Current

0.45

0.7

6

6.3

V

Dynamic Impedance

18

k

Ω

INTERNAL OSCILLATOR

Switching Frequency

50

60

75

kHz

Frequency dithering

kHz

Temperature Stability

510

%

DRIVE OUTPUT SECTION

OUT Turn-on Voltage

9.5

12

V

OUT Turn-off Voltage

55.5

6.5

V

Rise Time

60

ns

Fall Time

30

Maximum Duty Cycle

67

75

84

%

Minimum Duty Cycle

3

Driver OUT On-Resistance

3

Ω

Switch Off Current (OUT)

20

40

μA

Effective Current Limit

460

mA

OUT Current Coefficient

-0.3

A/V

Electrical Characteristics

Note 3: AP3700E is an emitter drive controller, the PWM controller will start up only when the voltage on the OUT pin rises

up to its threshould value.