P2172 datasheet(5/7 Pages) UTC

Part #	P2172

Description	100KHZ, 1.25A HIGH EFFICIENCY SWITCHING REGULATORS

PDF	7 Pages

Scroll/Zoom	100%

Manufacturer	UTC [Unisonic Technologies]

Direct Link	http://www.utc-ic.com

Logo

5 / 7 page

P2172

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

5 of 7

www.unisonic.com.tw

QW-R103-067.a

ELECTRICAL CHARACTERISTICS(Cont.)

(VIN=15V, VC=0.5V, VFB=VREF, output pin open, unless otherwise noted.)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Switching Frequency

100

112

kHz

Maximum Switch Duty Cycle

DCMAX

Shutdown Mode Supply Current

3V≤VIN≤VMAX, VC=0.05V

100

250

μA

Shutdown Mode Threshold Voltage

3V≤VIN≤VMAX

100

150

250

Flyback Sense Delay Time (Note 3)

1.5

μs

Notes: 1. Measured with VC in hi clamp, VFB=0.8V, ISW=1A.

2. For duty cycles (DC) between 50% and 80%, minimum guaranteed switch current is given by

ILIM=0.833×(2-DC).

3. Minimum input voltage for isolated flyback mode is 7V, VMAX=55V for HV grade in fully isolated mode to

avoid switch breakdown.

P2172 Datasheet(PDF) 5 Page - Unisonic Technologies