UC4107G-SH2-R [UTC]

TWO-STAGE HYSTERETIC LED DRIVER CONTROLLER;


型号：	UC4107G-SH2-R
厂家：	Unisonic Technologies
描述：	TWO-STAGE HYSTERETIC LED DRIVER CONTROLLER 驱动
文件：	总4页 (文件大小：160K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

UC4107

Preliminary

CMOS IC

TWO-STAGE HYSTERETIC LED

DRIVER CONTROLLER



DESCRIPTION

SOP-8

The UTC UC4107 is a two-stage controller with dual gate

drivers consist of a Boost converter and a Buck converter. The

advantage of the two-stage topology is highly compatible with

Electronic Transformer in MR16/AR111 lighting market field

applications.

The UTC UC4107 is equipped with dual output gate drivers for

external power MOSFETs, suitable for higher power applications.

HSOP-8



FEATURES

* Topology: Boost+Buck

* Input Voltage Range: 4.5V~40V

* Adjustable Peak Input Current Control

* Adjustable Boost Output Voltage

* Independent Dual Stage Function

* Adjustable LED Current

* LED Current Accuracy: ±5%

* Input Under Voltage Lockout Detection

* Thermal Shutdown Protection



ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

UC4107L-S08-R

UC4107L-SH2-R

UC4107G-S08-R

UC4107G-SH2-R

SOP-8

Tape Reel

HSOP-8



MARKING

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QW-R125-055.b

UC4107

Preliminary

CMOS IC



PIN CONFIGURATION

GATE1

GATE2

GATE1

GATE2

CREG

V_CC

CREG

V_CC

GND

OVP

GND

OVP

GND

ISN



PIN DESCRIPTION

PIN NO.

PIN NAME

GATE1

DESCRIPTION

Gate Driver Output for External MOSFET Switch in the First Stage.

Current Sense Input for External MOSFET Switch.

Over Voltage Protection Sense Input.

OVP

GND

Ground.

ISN

LED Current Sense Amplifier Negative Input.

V_CC

Supply Voltage Input. For good bypass, place a ceramic capacitor near the VCC pin.

Internal Regulator Output. Place an 1μF capacitor between the CREG and GND pins.

Gate Driver Output for External MOSFET Switch in the Second Stage.

CREG

GATE2



BLOCK DIAGRAM

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UC4107

Preliminary

CMOS IC



ABSOLUTE MAXIMUM RATING (T_A=25°C, unless otherwise specified)

PARAMETER

SYMBOL

RATINGS

-0.3 ~ 45

-0.3 ~ 6

-1 ~ 3

UNIT

Supply Input Voltage, V_CCto GND

CS, GATE1, GATE2, CREG, OVP to GND

V_CCTo ISN

V_ISN

P_D

Power Dissipation, @ T_A=25°C

Junction Temperature

0.53

T_J

+150

°C

Storage Temperature Range

T_STG

-65 ~ +150

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

RATINGS

4.5 ~ +40

-40 ~ +125

-40 ~ +85

UNIT

Supply Input Voltage

V_CC

T_J

Junction Temperature Range

Ambient Temperature Range

°C

T_A

°C



THERMAL DATA

PARAMETER

Junction to Ambient

SYMBOL

RATINGS

188

UNIT

θ_JA

°С/W



ELECTRICAL CHARACTERISTICS

(V_CC=10V, No Load, C_LOAD=1nF, T_A=25°C, unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS

CREG UVLO_ON

MIN TYP MAX UNIT

V_{UVOL_ON}CS/OVP=0V

V_{UVOL_OFF}CS/OVP=0V

4.3

4.2

4.6

CREG UVLO_OFF

V_CCShutdown Current

I_SHDN

Before Start-Up, V_CC=3.5V

After Start-Up, V_CC=5V, GATE1 and

GATE2 Stand Still

μA

V_CCQuiescent Current

I_Q

1.5

Internal Reference Voltage

CS Threshold Voltage

CS Pin Leakage Current

OVP High Level

V_CREG

I_CREG=20mA

4.9

V_CS

I_CS

215 240 265

μA

V_{OVP_H}

V_{OVP_L}

I_OVP

1.71 1.9 2.09

OVP Low Level

1.44 1.6 1.76

OVP Pin Leakage Current

GATE1 Duty Off-Time

UGATE1 Drive Sink

1.5

μA

μs

Ω

R_UGATE1skSink=50mA

LGATE1 Drive Source

GATE1 Default Pull Down Resistor

ISN Threshold

R_LGATE1srSource=−50mA

1.25

Ω

kΩ

V_ISN

123.5 130 136.5 mV

ISN Hysteresis

∆V_ISN

μA

Ω

ISN Pin Leakage Current

UGATE2 Drive Sink

I_ISN

R_UGATE2skSink=50mA

R_LGATE2srSource=−50mA

LGATE2 Drive Source

GATE2 Default Pull Down Resistor

Thermal Shutdown Temperature

Thermal Shutdown Hysteresis

1.25

Ω

kΩ

°C

T_SD

140 155 170

∆T_SD

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UC4107

Preliminary

CMOS IC



TYPICAL APPLICATION CIRCUIT

22μH

12V

LED+

R_SENSE

280m

4.7μF

C_IN

1μF

C_OUT

LED-

V_CC

ISN

120μH

OVP

CREG

UTC

UC4107

4.7μF

GATE1

GATE2

120m

GND

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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