TS19377CS RLG Taiwan Semiconductor, TS19377CS RLG Datasheet

TS19377CS RLG

Manufacturer Part Number

TS19377CS RLG

Description

LED Lighting Drivers 2A Step Down Buck WLED Driver

Manufacturer

Taiwan Semiconductor

Datasheet

1.TS19377CS_RLG.pdf (7 pages)

Specifications of TS19377CS RLG

Rohs

yes

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General Description

TS19377 consists of step-down switching regulator with PWM control. These devise include a reference voltage

source, oscillation circuit, error amplifier, internal PMOS and etc.

TS19377 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control

circuit is able to the duty ratio linearly from 0 up to 100%. An enable function, an over current protect function and

short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will be

reduced. Also, an internal compensation block is built in to minimum external component count.

With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally, these

ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devices

when coupled with the SOP-8 package, providing such outstanding features as low current consumption. Since

this converter can accommodate an input voltage up to 23V, it is also suitable for the operation via an AC adapter.

Features

●

Block Diagram

Input Voltage Range 3.6V~23V

Output voltage: 0.25V~Vcc

2A Switch Output Current

Duty ratio: 0%~100% PWM control

330kHz Switching Frequency

Enable/Disable Functions

Current limit and Thermal Shutdown

Short Circuit Protections

Built-in Internal SW P-CH MOS

SOP-8

Vcc

Pin Definition:

1. FB

2. EN

3. Comp

4. Vcc

8. GND

7. GND

6. SW

5. SW

Shutdown

Thermal

Control Circuit

PWMSwitched

Oscillator

Circuit

Application

●

Ordering Information

Note: “G” denotes Halogen Free Product.

1/7

2A Buck (Step-down) WLED Driver

TS19377CS RLG

White LED Backlighting

White LED Driving

Multiple LED Driving

LED Lighting Equipment

Part No.

Current

Limit

Reference Voltage

Comp

Package

SOP-8

TS19377

2.5Kpcs / 13” Reel

Vss

Packing

Version: A11

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TS19377CS RLG Summary of contents

Page 1

... GND Application ● White LED Backlighting ● White LED Driving ● Multiple LED Driving ● LED Lighting Equipment Ordering Information Part No. TS19377CS RLG Note: “G” denotes Halogen Free Product. SW Oscillator Circuit PWMSwitched Control Circuit Thermal Shutdown Current 1/7 ...

Page 2

Absolute Maximum Rating Parameter V Pin Voltage CC Feedback Pin Voltage ON/OFF Pin Voltage Switch Pin Voltage Power Dissipation Storage Temperature Range Operating Temperature Range Operating Supply Voltage Thermal Resistance from Junction to case Electrical Specifications (V Parameter Feedback Voltage ...

Page 3

Typical Application Circuit A: 1W/3W LED*1 for DC Input VCC R1 100K C3 C2 22u 0.1u Recommend Bill of Material LED 350mA 0.715 87.5mW 750mA 0.333 189mW 1000mA 0.250 250mW B: 1W/3W LED*1 for AC Input No output ...

Page 4

Function Descriptions PWM Control The TS19377 consists of DC/DC converters that employ a pulse-width modulation (PWM) system. In converters of the TS19377, the pulse width varies in a range from 0 to 100%, according to the load current. The ripple ...

Page 5

Electrical Characteristics Curve Figure 1. Quiescent Current vs. Temperature Figure 3. Feedback Voltage vs. Temperature Figure 5. Frequency vs. Temperature 2A Buck (Step-down) WLED Driver Figure 2. Shutdown Current vs. Temperature Figure 4. Feedback Voltage vs. Input Voltage Figure 6. ...

Page 6

Marking Diagram Y = Year Code M = Month Code for Halogen Free Product L = Lot Code 2A Buck (Step-down) WLED Driver SOP-8 Mechanical Drawing DIM (O=Jan, P=Feb, Q=Mar, ...

Page 7

Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No ...

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