TS1909CX5XXRF データシートの表示（PDF） - TSC Corporation

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TS1909CX5XXRF

MicroPower VFM Boost DC to Dc Converter

TSC Corporation 

TS1909

MicroPower VFM Boost DC to Dc Converter

SOT-25

Pin Definition:

1. Enable

2. Output

3. N.C

4. Ground

5. SW

General Description

The TS1909 is a high efficiency VFM Step-up DC/DC converter for small, low input voltage or battery powered

systems with ultra low quiescent supply current. The TS1909 accept a positive input voltage from start-up voltage to

VOUT and convert it to a higher output voltage in the 2.5 to 5V range.

The TS1909 combine ultra low quiescent supply current and high efficiency to give maximum battery life. The high

switching frequency and the internally limited peak inductor current permits the use of small, low cost inductors. Only

three external components are needed an inductor a diode and an output capacitor. The TS1909 is suitable to be

used in battery powered equipment where low noise, low ripple and ultra low supply current are required.

Typical applications are pagers, cameras & video camera, cellular telephones, wireless telephones, palmtop

computer, battery backup supplies, battery powered equipment.

Features

● Very Low Supply Current 22µA (Typ.)

● Maximum shutdown current <1µA

● Output Voltage Accuracy ±2.5%

● Output Current up to 100mA

● Low Ripple and Low Noise

● Very Low Start-up Voltage

● High Efficiency Typ. 87% @ VOUT=5V

● Few External Components

Typical Application Circuit

Ordering Information

Part No.

Package

Packing

TS1909CX5xx RF SOT-25 3Kpcs / 7” Reel

Note: Where xx denotes voltage option.

Available output: 27=2.7V, 30=3V, 33=3.3V, 50=5V

Absolute Maximum Rating

Parameter

Symbol

Limit

Unit

VIN Pin Voltage

VIN

5.5

V

SW Voltage

VSW

5.5

V

OUT Pin Voltage

Storage Temperature Range

Operating Junction Temperature Range

VOUT

5.5

V

TSTG

-40 to +150

oC

TJ

-20 to +100

oC

Power Dissipation

Thermal Resistance from Junction to case

Thermal Resistance from Junction to ambient

PD

( TJ-TA ) / θJA

mW

θJC

110

oC/W

θJA

250

oC/W

Note: θJA is measured with the PCB copper area of approximately 1 inch (Multi-layer) that need connect to GND pin.

1/1

Version: A10

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