Datasheet > AAT1235

AAT1235

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		驱动器
页数	文件大小	规格书
21页	958K
描述
High Efficiency White LED Drivers for Backlight and Keypad

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AAT1235 数据手册

AAT1235

High Efficiency White LED Drivers

for Backlight and Keypad

Electrical Characteristics¹

V_IN= 3.6V; C_IN= 2.2µF;T_A= -40°C to +85°C, unless otherwise noted. Typical values are at T_A= 25°C.

Symbol

Description

Conditions

Min Typ Max Units

Power Supply

V_IN

Input Voltage Range

2.7

5.5

V_OUT(MAX)

Maximum Output Voltage

V_INRising

2.7

V_UVLO

UVLO Threshold

Hysteresis

150

V_INFalling

1.8

B1 = B2 = A1 = A2 = A3 = 1.2V,

2mA Setting, R_SET= 226kΩ

EN = GND

I_CC

I_SHDN(MAX)

I_OX

Operating Current (No Switching)

IN Pin Shutdown Current

300

1.0

µA

Maximum Continuous Output Current V_O= 24V

100

I_DX

Current Sink Accuracy

Current Matching Between Any

Sink Channels

R_SET= 22.6kΩ

R_SET= 22.6kΩ,

A1 = A2 = A3 = B1 = B2 = 0.4V

From Enable to Output

Regulation; V_FB= 300mV

V_OUTRising

I_DX-Matching

T_SS

Soft-Start Time

300

µs

OVP Threshold Voltage

OVP Threshold Hysteresis

Low Side Switch On Resistance

Input Disconnect Switch

Current Set Ratio

1.1

1.2

100

1.3

V_OV

mΩ

A/A

R_DS(ON)N

R_DS(ON)IN

I_SET

I_OUT= 100mA

200

760

I_SINK/I_RSET, V_RSET= 0.6V

I_LIMIT

Input Switch Current Limit

EN/SET Input

V_EN(L)

Enable Threshold Low

Enable Threshold High

EN/SET Low Time

0.4

V_EN(H)

1.4

0.3

T_{EN/SET LO}

T_{EN/SET HI}

T_OFF

µs

µA

EN/SET High Time

EN/SET Off Timeout

EN/SET Latch Timeout

EN/SET Input Leakage

500

T_LAT

I_EN/SET

V_EN/SET= V_IN= 5V

-1

Thermal Protection

T_J-TH

T_JThermal Shutdown Threshold

T_JThermal Shutdown Hysteresis

140

°C

T_J-HYS

1. The AAT1235 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range is assured by

design, characterization, and correlation with statistical process controls.

1235.2007.02.1.1

1 2 345 6 7...21

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