Datasheet > AAT1281IWO-T1

AAT1281IWO-T1

更新时间： 2024-01-21 14:58:02

品牌	Logo	应用领域
思佳讯 - SKYWORKS		驱动接口集成电路
页数	文件大小	规格书
18页	543K
描述
LED Driver

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技术参数
数据手册

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AAT1281IWO-T1 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.76
接口集成电路类型：	LED DISPLAY DRIVER	峰值回流温度（摄氏度）：	NOT SPECIFIED
处于峰值回流温度下的最长时间：	NOT SPECIFIED	Base Number Matches：	1

AAT1281IWO-T1 数据手册

PRODUCT DATASHEET

AAT1281

SwitchReg

2A Driver IC for High Intensity LED Camera Flash

Electrical Characteristics¹

V_IN= 3.6V; C_IN= 2.2ꢀF; C_OUT= 2.2ꢀF; L = 1ꢀH; R_SET= 80.6kꢂ; T_A= -40°C to +85, unless otherwise noted. Typical

values are T_A= 25°C.

Symbol

Description

Conditions

Min

Typ

Max Units

Power Supply

V_IN

Input Voltage Range

2.7

5.5

EN = IN; FLEN = AGND; Set load = 2A;

R_SET= 80.6kꢂ

I_IN(Q)

Supply Current

0.57

I_SHDN(MAX)

I_FL(TOTAL)

I_FL(MATCH)

Shutdown Current

EN/SET = FLEN = AGND

1.0

ꢄA

Total Output Current, Flash Mode

FLOUTA and FLOUTB Current Matching

R_SET= 80.6kꢂ, FLOUTA + FLOUTB

1800

1.5

2000

2200

R_SET= 80.6ꢂ , Movie Mode Current Set

= 100%, FLOUTA + FLOUTB

I_MM(TOTAL)

Total Output Current, Movie Mode

Switching Frequency

274

2.0

T_A= 25°C

2.5

MHz

f_osc

Soft Start Time

200

600

140

ꢄs

ꢁC

T_SS

t_default

T_SD

Default ON Time

C_T= 47ꢄF

T_JThermal Shutdown Threshold

T_JThermal Shutdown Hysteresis

T_SD(HYS)

ꢁC

EN/SET/ FLEN/ Control

V_EN(L)

V_FLEN(L)

V_EN(H)

EN/SET Threshold Low

0.4

Enable Threshold High

1.4

0.3

V_FLEN(H)

T_EN/SET(Low)

EN/SET Serial Interface Low Time

ꢄs

T_{EN/SET HI MIN}

Minimum EN/SET High Time

V_EN/SET> 1.4V

T_{EN/SET HI MAX}

T_EN/SET(OFF)

T_EN/SET(LAT)

I_EN/SET,I_FLEN

T_{FLEN OND}

T_{FLEN OFFD}

POK Output

V_POK

Maximum EN/SET High Time

EN/SET Off Timeout

V_EN/SET> 1.4V

500

ꢄs

ꢄA

ꢄs

V_EN/SET< 0.6V

EN/SET Latch Timeout

EN/SET or FLEN Input Leakage

FLEN ON Delay Time

V_EN/SET> 1.4V

V_FLENor V_EN/SET= V_IN= 5V

EN/SET = AGND

-1

FLEN OFF Delay Time

Trip Threshold

V_OUTrising, T_A= 25^°C

V_{POK_HYS}

POK Hysteresis

200

V_POK(L)

System POK Voltage Low

POK Leakage Current

I_SINK= 1mA

0.4

1.0

I_POK

V_POK< V_IN, V_OUT< 94% of V_OUT

ꢄA

Super Capacitor Balancing

Resistance from VOUT to center point

or center point to GND

R_CB

EN/SET = HIGH

kꢂ

R_{CB_match}

1. The AAT1281 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-

tion with statistical process controls.

w w w . a n a l o g i c t e c h . c o m

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