Datasheet > 驱动程序和接口 > MOSFET 驱动器> FAN5340UCX

FAN5340UCX

更新时间： 2024-01-23 00:54:48

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		驱动器
页数	文件大小	规格书
12页	931K
描述
Synchronous Constant-Current Series Boost LED Driver with PWM Brightness Control and Integrated Load Disconnect

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数据手册

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FAN5340UCX 数据手册

Electrical Specifications

V_IN= 2.7V to 4.8V and T_A= -40°C to +85°C unless otherwise noted. Typical values are at T_A= 25°C and V_IN= 3.6V.

Parameter

Conditions

Min.

Typ.

Max. Units

Symbol

Power Supplies

I_Q

Quiescent Current

EN = V_IN, Device Not Switching

EN = GND, V_IN= 3.6V

μA

I_SD

Shutdown Supply Current

0.3

2.40

2.15

250

1.0

V_INRising

2.30

2.00

2.50

2.25

V_UVLO

Under-Voltage Lockout

V_INFalling

V_UVHYSTUnder-Voltage Lockout Hysteresis

EN: Enable Pin

V_IH

V_IL

HIGH-Level Input Voltage

LOW-Level Input Voltage

EN Pull-Down Resistance

EN Low to Shutdown Delay

1.2

0.4

400

R_EN

t_SD

200

300

kΩ

From Falling Edge of EN

V_FB= 500mV

Feedback and Reference

V_FB

I_FB

Feedback Voltage

480

500

0.1

520

1.0

Feedback Input Current

μA

Power Outputs

_IN= 3.6V, V_OUT= 10V, I_SW= 100mA

600

850

2.0

2.8

R_{DS(ON)_Q1}Boost Switch On-Resistance

mΩ

V_IN= 2.7V, V_OUT= 10V, I_SW= 100mA

R_{DS(ON)_Q2}Synchronous Rectifier On-Resistance V_OUT= 10V, I_SW= 100mA

R_{DS(ON)_Q3}Load Switch On-Resistance

I_SW(OFF)SW Node Leakage⁽²⁾

V_OUT= 10V, I_LED= 10mA

EN = 0, V_IN= V_SW= V_OUT= 5.5V,

V_LED= 0

0.1

1.0

μA

I_LIM-PK

Oscillator

f_SW

Boost Switch Peak Current Limit

V_IN= 3.6V

325

1.0

400

475

Boost Regulator Switching Frequency

1.2

1.4

100

20.0

MHz

PWM Dimming

D_PWM

PWM Duty Cycle⁽³⁾

PWM Dimming Frequency ≤1kHz

1.0

Output and Protection

V_OVP

Boost Output Over-Voltage Protection

18.0

19.0

0.8

V_OVPHYSTOVP Hysteresis

_OUTFalling

V_IN– 1.5

V_IN– 1.3

V_THSC

V_LEDShort-Circuit Detection Threshold

V_OUTRising

D_MAX

D_MIN

Maximum Boost Duty Cycle⁽³⁾

Minimum Boost Duty Cycle⁽³⁾

Thermal Shutdown

°C

T_SD

150

T_HYS

Thermal Shutdown Hysteresis

Notes:

2. SW leakage current includes the leakage current of three internal switches; SW to GND, V_OUTto V_LED, and SW to V_OUT

3. Guaranteed by design.

FAN5340 • Rev. 1.0.1

www.fairchildsemi.com

1 2 3 456 7 8...12

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