Datasheet > ALED7709

ALED7709

更新时间： 2023-12-20 18:44:29

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
64页	11048K
描述
Automotive LED driver 4-channel 200 mA with a DC-DC controller

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ALED7709 数据手册

ALED7709

Electrical characteristics

V_IN= 12 V, V_EN= high, T_J= -40 °C to +125 °C unless otherwise specified.

Table 8. Electrical characteristics

Symbol

Parameter

Operating input voltage

Test conditions

LDO5 as output

LDO5 as input (LDO5 shorted to VIN)

Min. Typ. Max.

Unit

4.5

5.5

4.2

rising

falling

Undervoltage lockout upper threshold

Undervoltage lockout lower threshold

Undervoltage lockout hysteresis

3V3 LDO output voltage

1V8 LDO output voltage

5V LDO output voltage

3.75

4.0

3.7

0.3

UVLO,ON

UVLO,OFF

UVLO,HYS

3.5

3.9

3.2

1.7

4.8

3.33 3.45

1.8 1.87

5.1 5.35

LDO3V3

LDO1V8

LDO5

EN pin < V

EN pin > V

(shutdown mode)

; bit DEN = 0

Shutdown current

μA

VIN,SHDN

EN1

EN2

Standby current

1.5

VIN,STBY

; bit DEN = 1;

Operating current

VIN,OP

CHs & Boost OFF

Boost ON @1 MHz;

Full operating current ⁽¹⁾

VIN,ON

All CHs ON @100 mA

Enable

EN1

Device enable threshold

0.3

0.7

Rising

1.12 1.22 1.32

0.97 1.07 1.17

0.15

EN2

Converter enable threshold

Falling

Hysteresis

Converter controller

CLK

/ 8

INT

Internal switching frequency

Switching frequency constant

FSW[1:0] = 10

SW_int

= 24.9 kΩ

27 MHz * kΩ

FSW

= 100 kΩ => K

/ R

= F

250

FSW

FSW SW

Adjustable switching frequency FSW[1:0] = 00

Synchronization signal frequency capture range

= 12.4 kΩ => K

/ R

= F

FSW SW

2016

FSW

kHz

SW_adj

200 ns, V

> 2.8 V

< 0.3 V,

CLK,L

CLK,H =

250

2.8

2200

0.3

CLK,H

FSW synchronization input high level

FSW synchronization input low level

SWH

SWL

Synchronization input high level pulse width

Power switch max. peak detection threshold

200

180

Ω

SWPulse

- V

200 220

2.00

ICSN,PK

ICSN

of high-side driver ⁽¹⁾

of low-side driver ⁽¹⁾

DRVR

_on_HS

_on_LS

_on

1.07

Ω

Max. soft-start duration ^{(1) (2)}

3.5

SS,max

DS14214 - Rev 4

page 10/64

1...7 8 91011 12 13...64

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