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1.4-8

5 - 20

AS3635

Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s

High Level Input

Voltage

Pins CHARGE, FLASH;

pin DONE in trimmode

1.26

V

Low Level Input

Voltage

0.0

0.54

V

Low Level Output

Voltage

0.2

V

Leakage current

Pin DONE

-1

+1

µA

Pulldown resistance to

GND

3

Pins CHARGE, FLASH

52

k

Ω

Recommended Transformer parameters - see Table 4, “Recommended Transformers,” on page 15

Primary Inductance

6

µH

Primary Leakage

Inductance

0.4

µH

N

Turns Ratio

10.2

Isolation Voltage

500

V

Primary Saturation

Current

0.84

A

Primary Winding

Resistance

0.4

Ω

Y

Secondary Winding

Resistance

60

Ω

2. Setting CHARGE=1 resets the timeout timer. Additionally the timeout timer is automatically stopped at power

on reset and once it has expired.

3. Measured with VBAT=3.7V, CHARGE or FLASH = 1.26V

Table 3. Electrical Characteristics (Continued)

Symbol

Parameter

Condition

Min

Typ

Max

Unit