2

UCC3830-4/-5/-6

CONNECTION DIAGRAM

SOIC-20 (Top View)

DW Package

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Undervoltage Lockout

VIN UVLO Turn-on Threshold

10.5

10.8

V

VIN UVLO Turn-off Threshold

9.5

10

V

UVLO Threshold Hysteresis

200

500

700

mV

Supply Current

D0 through D4 = Open

7.5

13.5

mA

DAC/Reference

COMMAND Voltage Accuracy

–1

1

%

D0-D4 Voltage High

DX Pin Floating

4

5

5.2

V

D0-D4 Input Bias Current

DX Pin Tied to GND

–100

–70

–20

µA

OVP Comparator

Trip Point

% Over COMMAND Voltage (Note 1), D0 = D1 = D2 = D4

= Open, D3 = GND

10

17.5

25

%

Hysteresis

20

30

mV

VSENSE Input Bias Current

OV, OVP, UV Combined

–0.5

–0.1

0.5

µA

The voltage and current amplifiers have a 3MHz gain

bandwidth product to satisfy high performance system

requirements. The internal current sense amplifier per-

mits the use of a low value current sense resistor, mini-

mizing power loss. The oscillator frequency is fixed

internally at 100kHz, 200kHz, or 400kHz, depending

upon the option selected. The foldback circuit reduces

the converter short circuit current limit to 50% of its nomi-

nal value when the converter is short circuited. The gate

driver is a 4

Ω totem pole output stage capable of driving

an external MOSFET.

This device is available in 20-pin dual in-line and surface

mount packages. The UCC3830-x is specified for opera-

tion from 0°C to 70°C.

Pentium

Intel Corporation.

DESCRIPTION (cont.)

FREQUENCY TABLE

Frequency

100kHz

200kHz

400kHz

UCC3830-4

X

UCC3830-5

X

UCC3830-6

X

UCC3830

–

ORDERING INFORMATION

Note: Consult factory for temperature range or package op-

tions not shown.

ABSOLUTE MAXIMUM RATING

Input Supply Voltage VIN . . . . . . . . . . . . . . . . . . . . . . . . . . 15V

D0, D1, D2, D3, D4, VSENSE, VFB, IS+, IS–, CAM Inputs

Maximum Forced Voltage . . . . . . . . . . . . . . . . –0.3V to 5.3V

PWRGOOD Output Maximum Voltage. . . . . . . . . . . . . . . . 5.5V

COMMAND Ouput Maximum Current . . . . . . Internally Limited

Reference Output Current . . . . . . . . . . . . . . . Internally Limited

Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C

Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°C

Currents are positive into negative out of the specified terminal.

Pulse is defined as a less than 10% duty cycle with a maximum

duration of 500 s. Consult Packaging Section of Databook for

thermal limitations and considerations of packages.