Datasheet > TS1909CX550

TS1909CX550

更新时间： 2024-11-06 01:08:35

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描述
MicroPower VFM Boost DC to Dc Converter

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TS1909CX550 数据手册

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

V_OUTand 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

Typical Application Circuit

●

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% @ V_OUT=5V

Few External Components

Ordering Information

Part No.

Package

SOT-25

Packing

TS1909CX5xx RF

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

V_IN

Limit

5.5

Unit

V_INPin Voltage

SW Voltage

V_SW

V_OUT

T_STG

T_J

5.5

OUT Pin Voltage

5.5

^oC

Storage Temperature Range

Operating Junction Temperature Range

Power Dissipation

-40 to +150

-20 to +100

( T_J-T_A) / θ_JA

110

P_D

^oC/W

Thermal Resistance from Junction to case

Thermal Resistance from Junction to ambient

θ_JC

θ_JA

250

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

1/1

Version: A10

12 3 4 5 6

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