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UCC2813QPWR-3Q1 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
稳压芯片
封装:
TSSOP-8
描述:
具有 4.1V/3.6V UVLO 和 100% 占空比的汽车类经济型单端 1MHz 电流模式 PWM 控制器 8-TSSOP -40 to 125
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UCC2813QPWR-3Q1数据手册
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SGLS245D − MAY 2004 − REVISED APRIL 2008
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics T
A
= −40_C to 125_C, V
CC
= 10 V (see Note 1), RT = 100 kΩ from REF to
RC, CT = 330 pF from RC to GND, 0.1 F capacitor from V
CC
to GND, 0.1 F capacitor from V
REF
to GND
and T
A
= T
J
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Oscillator Section
Oscillator frequency
See Note 2
UCC2813-0/-1/-2/-4 40 46 52
kHz
Oscillator frequency See Note 2
UCC2813-3/-5 26 31 36
kHz
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 UCC2813-0/-1/-2/-4 2.42 2.5 2.56
V
Input voltage
COMP = 2.0 V UCC2813-3/-5 1.92 2 2.05
V
Input bias current −2 2 µA
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
UCC2813-0/-2/-3 97 99 100
%
Maximum duty cycle
UCC2813-1/-4/-5 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 1.32 1.55 1.7 V
COMP to CS offset voltage CS = 0 V 0.45 0.9 1.35 V
Output Section (OUT)
I
OUT
= 20 mA All parts 0.1 0.4
Low-level output voltage
I
OUT
= 200 mA All parts 0.35 0.9
V
Low-level output voltage
I
OUT
= 50 mA, V
CC
= 5 V UCC2813-3/-5 0.15 0.4
V
I
OUT
= 20 mA, V
CC
= 0 V All parts 0.7 1.2
I
OUT
= −20 mA All parts 0.15 0.4
High-level output voltage, V
SAT
(V
CC
− OUT)
I
OUT
= −200 mA All parts 1 1.9
V
High-level output voltage, V
SAT
(V
CC
− OUT)
I
OUT
= −50 mA, V
CC
= 5 V UCC2813-3/-5 0.4 0.9
V
Rise time C
L
= 1 nF 41 70 ns
Fall time C
L
= 1 nF 44 75 ns
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