SIP12501 データシートの表示（PDF） - Vishay Semiconductors

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SIP12501

Boost Converter for Single/Double AA Cell or NiMH Battery for White LED Applications

Vishay Semiconductors 

SiP12501

Vishay Siliconix

TYPICAL WAVEFORMS

Product is End of Life 3/2014

VXSHD

0.5 V/div

VOUT

1 V/div

VFB

0.2 V/div

VIN = 0.8 V

1 ms/div

Four LEDs in series

Figure 2. PWM Dimming Control

200 Hz 50 % Duty Cycle PWM Signal on XSHD Pin

100 ms/div

Figure 3. Startup

VIN = VXSHD = 0 V to 0.8 V

VIN

0.5 V/div

VOUT

2 V/div

VLX

2 V/div

VOUT

50 mV/div

ac coupled

VFB

20 mV/div

ac coupled

0.5 µs/div

Figure 4. Switching Waveforms: VLX, VOUT and VFB

VIN = 0.8 V, L = 10 µH, COUT = 4.7 µF, Four LEDs in Parallel

Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon

Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and

reliability data, see www.vishay.com/ppg?73192.

www.vishay.com

6

Document Number: 73192

S09-1455-Rev. B, 03-Aug-09

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