AAT3143ITP-T1

更新时间： 2024-01-25 02:28:10

品牌	Logo	应用领域
ANALOGICTECH		泵
页数	文件大小	规格书
11页	478K
描述
High Efficiency 1X/1.5X/2X Charge Pump with PWM Control for White LED Applications

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AAT3143ITP-T1 数据手册

AAT3143

High Efficiency 1X/1.5X/2X Charge Pump with

PWM Control for White LED Applications

Electrical Characteristics¹

C_IN= C_CP= C₁= C₂= 1.0µF; T_A= -40°C to +85°C, unless otherwise noted. Typical values are T_A= 25°C,

V_IN= 3.5V.

Symbol

Description

Conditions

Min

Typ

Max Units

Input Power Supply

V_IN

Operation Range

2.7

5.5

VD1:D4 = 2.0V, CP = 1X

No Load Current, CP = 1.5X

EN/PWM = 0

550

I_CC

Operating Current

µA

I_SHDN

I_DX

Shutdown Current

µA

Output Current Accuracy

Current Matching²

I_OUT= 20mA, T_A= 25°C, V_IN= 3.5V

VD1:D4 = 3.6V, V_IN= 3.5V

-3

I_(D-Match)

±0.5

_IN= 3.5V, I_OUT(TOTAL)= 80mA,

η_CP

Charge Pump Efficiency

Measured from IN to CP

Charge Pump Section

F_CLK

EN/PWM

V_EN(L)

Clock Frequency

1000

kHz

Enable Threshold Low

Enable Threshold High

Maximum PWM Frequency

Minimum Pulse Width

0.4

V_EN(H)

1.4

F_PWM

kHz

µs

t_ON(MIN)

1. The AAT3143 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured

by design, characterization, and correlation with statistical process controls.

2. Current matching is defined as I_(D-Match)= (I_D- I_AVE)/I_AVE

3143.2006.05.1.0

1 2 345 6 7...11

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