L6920DC datasheet(5/16 Pages) STMICROELECTRONICS

tên linh kiện	L6920DC

Giải thích chi tiết về linh kiện	Synchronous rectifier step up converter

PDF	16 Pages

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nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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L6920DC

Electrical characteristics

5/16

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

Vout = 3.3V

0.8

Quiescent Current

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

LBI = SHDN = 2V

912

µA

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

LBI = SHDN = 2V

µA

Isd

Shut Down Current

Vin = 5V, Il = 0 mA

0.1

µA

Irev

Reverse battery current

Vin = -4V

0.1

µA

Power section

Ron-N

Active switch ON resistance

300

Ω

Ron-P

Synchronous switch ON

resistance

300

Ω

Control section

Vout

Output voltage

FB = OUT, Il = 0 mA

3.2

3.3

3.4

FB = GND, Il = 0 mA

4.955.1

Output voltage range

External divider

1.8

5.5

VLBI

LBI threshold

1.23

VLBO

LBO

logic LOW

Isink = 1mA

0.2

0.4

Ilim

LX switch current limit

0.55

0.9

Tonmax

Maximum on time

Vout = 3.3V

3.75

6.25

µs

Toffmin

Minimum off time

Vout = 3.3V

0.75

1.25

µs

SHDN

logic LOW

0.2

SHDN

logic HIGH

0.6

Vref

Reference Voltage

1.18

1.23

1.27

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