TEXAS INSTRUMENTS UCC2800, UCC2801, UCC2802, UCC2803, UCC2804 Technical data

		UCC2800/2801/2802/2803/2804/2805 Q1
		LOW POWER BICMOS CURRENT MODE PWM
		SGLS121C − JULY 2002 − REVISED APRIL 2008
D Qualified for Automotive Applications		D Internal Leading-Edge Blanking of the
D	ESD Protection Exceeds 200 V Using	Current Sense Signal
	Machine Model (C = 200 pF, R = 0)	D 1-Amp Totem-Pole Output
D 100- A Typical Starting Supply Current		D 70-ns Typical Response from
D 500- A Typical Operating Supply Current		Current-Sense to Gate Drive Output
D	Operation to 1 MHz	D 1.5% Tolerance Voltage Reference
D	Internal Soft Start	D Same Pinout as UC3842 and UC3842A

DInternal Fault Soft Start

description

The UCC2800/1/2/3/4/5 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and dc-to-dc fixed frequency current-mode switching power supplies with minimal parts count.

These devices have the same pin configuration as the UC2842/3/4/5 family and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC2800/1/2/3/4/5 family offers choice of maximum duty cycle and critical voltage levels. Lower reference parts such as the UCC2803 and UCC2805 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC2802 and UCC2804 make these ideal choices for use in off-line power supplies.

The UCC280xQDRQ1 series is specified for the automotive temperature range of −40 _C to 125_C, and qualified in accordance with AEC-Q100 stress test qualification for integrated circuits.

PART NUMBER	MAXIMUM DUTY CYCLE	REFERENCE VOLTAGE	TURN-ON THRESHOLD	TURN-OFF THRESHOLD
UCC2800	100%	5 V	7.2 V	6.9 V
UCC2801	50%	5 V	9.4 V	7.4 V
UCC2802	100%	5 V	12.5 V	8.3 V
UCC2803	100%	4 V	4.1 V	3.6 V
UCC2804	50%	5 V	12.5 V	8.3 V
UCC2805	50%	4 V	4.1 V	3.6 V

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.	Copyright 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265	1

UCC2800/2801/2802/2803/2804/2805 Q1
LOW POWER BICMOS CURRENT MODE PWM
SGLS121C − JULY 2002 − REVISED APRIL 2008
block diagram
			FB	COMP		CS
			2	1		3
						UCCx801	7	VCC
					Leading Edge	UCCx804
						UCCx805
VCC					Blanking
		1.5 V				Only
			REF/2
OK		Overcurrent				T Q
		S Q
		R			Oscillator S Q		6	OUT
	4 V	S Q
						R
		R				PWM
REF	0.5 V					Latch	13.5 V
OK
		Full Cycle

Logic	Soft Start
Power

= 4 ms	1 V

5 GND

8

REF

AVAILABLE OPTIONS{

SOIC-8

TA SMALL OUTLINE}

(D)

UCC2800QDRQ1§

UCC2801QDRQ1§

UCC2802QDRQ1§

−40 _C to 125_C

UCC2803QDRQ1§

UCC2804QDRQ1§

UCC2805QDRQ1§

{For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see

the TI web site at http://www.ti.com.

‡Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.

§The UCC280x−Q1 is only available taped and reeled in quantities of 2500 devices per reel.

4

RC

D PACKAGE (TOP VIEW)

COMP			1	8		REF
FB			2	7		VCC
CS			3	6		OUT
RC			4	5		GND

2	POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

									UCC2800/2801/2802/2803/2804/2805 Q1
									LOW POWER BICMOS CURRENT MODE PWM
									SGLS121C − JULY 2002 − REVISED APRIL 2008
Ordering Information
UCC280 0 Q D				R Q1
									Q100 INDICATOR
									TAPE and REEL INDICATOR
									PACKAGE
									D = Plastic SOIC
									AUTOMOTIVE TEMPERATURE RANGE INDICATOR
									PRODUCT OPTION
									0 through 5

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†‡

	V	CC	voltage w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . 12 V
	V		current w	30 mA
		CC
	Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			. . . . . . . . . ±1 A
	Output energy, (Capacitive Load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			. . . . . . . . 20 J
	Analog Inputs (FB, CS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			−0.3 V to 6.3 V
	Power Dissipation at TA < +25_C (D package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			. . . . . . . 0.65 W
	Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			−65 _C to 150_C
	Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . .			. . . . . . . 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.

‡ Unless otherwise indicated, voltages are reference to ground and currents are positive into and negative out of the specified terminals.

wIn normal operation VCC is powered through a current limiting resistor. Absolute maximum of 12 V applies when VCC is driven from a low impedance source such that ICC does not exceed 30 mA (which includes gate drive current requirement).

electrical characteristics TA = −40 _C to 125_C, VCC = 10 V (see Note 1), RT = 100 kΩ from REF to

RC, CT = 330 pF from RC to GND, 0.1-F capacitor from VCC to GND, 0.1-F capacitor from VREF to GND and TA = TJ (unless otherwise stated)

		PARAMETER	TEST CONDITIONS		MIN	TYP	MAX	UNITS
	Reference Section
	Output voltage		TJ = 25_C, I = 0.2 mA	UCC2800/01/02/04	4.925	5	5.075	V
				UCC2803/05	3.94	4	4.06
	Load regulation voltage		I = 0.2 mA to 5 mA			10	30	mV
	Line regulation voltage		VCC = 10 V to 12 V	TJ = 25_C			1.9	mV/V
				TJ = −40 _C to 125_C			2.5
	Total variation voltage		See Note 5	UCC2800/01/02/04	4.88	5	5.1	V
				UCC2803/05	3.9	4	4.08
	Output noise voltage		f = 10 Hz to 10 kHz,	TJ = 25_C		130		V
			See Note 7
	Long term stability		1000 hours,	TA = 125_C		5		mV
			See Note 7
	Output short-circuit current				−5		−35	mA

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

UCC2800/2801/2802/2803/2804/2805 Q1
LOW POWER BICMOS CURRENT MODE PWM

SGLS121C − JULY 2002 − REVISED APRIL 2008

electrical characteristics TA = −40 _C to 125_C, VCC = 10 V (see Note 1), RT = 100 kΩ from REF to

RC, CT = 330 pF from RC to GND, 0.1-F capacitor from VCC to GND, 0.1-F capacitor from VREF to GND and TA = TJ (unless otherwise stated)

PARAMETER	TEST CONDITIONS				MIN	TYP	MAX	UNITS
Oscillator Section
Oscillator frequency	See Note 2			UCC2800/01/02/04	40	46	52	kHz
				UCC2803/05	26	31	36
Temperature stability	See Note 7					2.5		%
Amplitude peak-to-peak					2.25	2.4	2.55	V
Oscillator peak voltage						2.45		V
Error Amplifier Section
Input voltage	COMP = 2.5 V			UCC2800/01/02/04	2.44	2.5	2.56	V
	COMP = 2.0 V			UCC2803/05	1.95	2	2.05
Input bias current					−1		1	A
Open loop voltage gain					60	80		db
COMP sink current	FB = 2.7 V,	COMP = 1.1 V			0.3		3.5	mA
COMP source current	FB = 1.8 V,	COMP = REF − 1.2 V			−0.2	−0.5	−0.8	mA
Gain bandwidth product	See Note 7					2		MHz
PWM Section
Maximum duty cycle				UCC2800/02/03	97	99	100	%
				UCC2801/04/05	48	49	50
Minimum duty cycle	COMP = 0 V						0	%
Current Sense Section
Gain	See Note 3				1.1	1.65	1.8	V/V
Maximum input signal	COMP = 5 V,	See Note 4			0.9	1	1.1	V
Input bias current					−200		200	nA
CS blank time					50	100	150	ns
Over-current threshold voltage					1.42	1.55	1.68	V
COMP to CS offset voltage	CS = 0 V				0.45	0.9	1.35	V
Output Section (OUT)
	IOUT = 20 mA			All parts		0.1	0.4
Low-level output voltage	IOUT = 200 mA			All parts		0.35	0.9	V
	IOUT = 50 mA,	VCC = 5 V		UCC2803/05		0.15	0.4
	IOUT = 20 mA,	VCC = 0 V		All parts		0.7	1.2
	IOUT = −20 mA			All parts		0.15	0.4
High-level output voltage VSAT (VCC - OUT)	IOUT = −200 mA			All parts		1	1.9	V
	IOUT = −50 mA,	V CC = 5 V		UCC2803/05		0.4	0.9
Rise time	CL = 1 nF					41	70	ns
Fall time	CL = 1 nF					44	75	ns

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