L6920DB Просмотр технического описания (PDF) - STMicroelectronics

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L6920DB

Synchronous rectifier step up converter

STMicroelectronics 

L6920DB

3

Electrical characteristics

Electrical characteristics

Table 4. Electrical characteristcs

(VIN = 2V, FB = GND, TJ = 25°C unless otherwise specified)

Symbol

Parameter

Test condition

Min Typ Max Unit

VCC Section

VIN

Minimum Start Up Input

Voltage

Iq Quiescent Current

Isd Shut Down Current

Irev Reverse battery current

Vout = 3.3V

Il = 0 mA, FB = 1.4V, Vout = 3.3V

LBI = SHDN = 2V

Il = 0 mA, FB = 1.4V, Vout = 5V

LBI = SHDN = 2V

Vin = 5V, Il = 0 mA

Vin = -4V

0.8

V

9 12 µA

11 15 µA

0.1 1 µA

0.1 1 µA

Power section

Ron-N

Ron-P

Active switch ON resistance

Synchronous switch ON

resistance

300

mΩ

300

mΩ

Control section

Vout Output voltage

Output voltage range

VLBI LBI threshold

VLBO LBO logic LOW

Ilim LX switch current limit

Tonmax Maximum on time

Toffmin Minimum off time

SHDN SHDN logic LOW

SHDN logic HIGH

Vref Reference Voltage

FB = OUT, Il = 0 mA

FB = GND, Il = 0 mA

External divider

Isink = 1mA

Vout = 3.3V

Vout = 3.3V

3.2 3.3 3.4 V

4.9 5 5.1 V

1.8

5.2 V

1.23

V

0.2 0.4 V

0.7 0.8 0.9 A

3.75 5 6.25 µs

0.75 1 1.25 µs

0.2 V

0.6

V

1.18 1.23 1.27 V

5/16

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