CS52843 datasheet(3/6 Pages) CHERRY

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Package Pin Description

PACKAGE PIN #

PIN SYMBOL

FUNCTION

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

14L

SO Narrow

COMP

Error amp output, used to compensate error amplifier.

VFB

Error amp inverting input.

Sense

Noninverting input to Current Sense Comparator.

OSC

Oscillator timing network with Capacitor to Ground, resistor to VREF.

Gnd

Ground.

Pwr Gnd

Output driver Ground.

610

VOUT

Output drive pin.

711

VCCPwr

Output driver positive supply.

712

VCC

Positive power supply.

814

VREF

Output of 5V internal reference.

2,4,6,13

No Connection.

Electrical Characteristics: -40 ≤ TA ≤ 85˚C; VCC = 15V (Note 1); RT = 680Ω; CT = .022µF for triangle mode,

RT = 10kΩ; CT = 3.3nF sawtooth mode unless otherwise stated.

Rise Time

TJ = 25˚C, CL = 1nF (Note 1)

150

Fall Time

TJ=25˚C, CL=1nF (Note 1)

150

Output Leakage

UVLO Active VOUT = 0

-.01

-10.0

µA

Total Standby Current

Start-Up Current

300

500

µA

Operating Supply Current

VFB=VSense=0V RT=10kΩ, CT=3.3nF

VCC Zener Voltage

ICC=25mA

Undervoltage Lockout Section

Start Threshold

7.8

8.4

9.0

Min. Operating Voltage

After Turn On

7.0

7.6

8.2

Notes:

1.These parameters, although guaranteed, are not 100% tested in production.

2. Parameter measured at trip point of latch with VFB=0.

3. Gain defined as: A =

; 0 ≤ VSense ≤ 0.8V.

∆VCOMP

∆VSense

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