UCC25705, UCC25706, UCC35705, UCC35706

HIGHSPEED VOLTAGE MODE PULSE WIDTH MODULATOR

SLUS473A – NOVEMBER 1999 – REVISED MARCH 2001

2

www.ti.com

Supply voltage

15 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage (VFF,RC,ILIM)

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage (FB)

15 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input current (DISCH)

1 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output current (OUT) dc

±20 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature (soldering, 10 sec.)

300

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

‡ All voltages are with respect to GND. Currents are positive into, negative out of the specified terminal. Consult Packaging Section of the Power

Supply Control Data Book (TI Literature Number SLUD003) for thermal limitations and considerations of packages.

AVAILABLE OPTIONS

Packaged Devices

TA = TJ

UVLO Option

SOIC-8

PDIP-8

Plastic Dip (P)

MSOP-8

Small Outline

–40

°Cto85°C

8.8V/8V

UCC25705D

UCC25705P

UCC25705DGK

–40

°C to 85°C

12V/8V

UCC25706D

UCC25706P

UCC25706DGK

0

°Cto70°C

8.8V/8V

UCC35705D

UCC35705P

UCC35705DGK

0

°C to 70°C

12V/8V

UCC35706D

UCC35706P

UCC35706DGK

† D (SOIC–8) and DGK (MSOP–8) packages are available taped and reeled. Add R suffix to device type (e.g.

UCC35705DR) to order quantities of 2500 devices per reel for SOIC-8 and 2000 devices per reel for the MSOP-8.

UVLO section (UCCx5705)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Start threshold

8.0

8.8

9.6

V

Stop threshold

7.4

8.2

9.0

V

Hysteresis

0.3

0.6

1.0

V

UVLO section (UCCx5706)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Start threshold

11.2

12.0

12.8

V

Stop threshold

7.2

8.0

8.8

V

Hysteresis

3.5

4.0

4.5

V

supply current section

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Start-up current

VDD = UVLO start – 1 V, VDD comparator off

30

90

µA

IDD active

VDD comparator on, oscillator running at 1 MHz

4.2

5.0

mA