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器件3D模型￥ 31.022
TPS40057PWPG4 其他数据使用手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
稳压芯片
封装:
HTSSOP-16
描述:
TEXAS INSTRUMENTS TPS40057PWPG4 直流/直流控制器, 电压模式, 8V至40V, 1路输出, 同步降压, 1MHz, HTSSOP-16
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3Hot
典型应用电路图在P20P21P22P23P24P25
原理图在P8
封装尺寸在P32P34P35
标记信息在P32P33
封装信息在P29P32P33P34P35
技术参数、封装参数在P4
应用领域在P33
电气规格在P5P6P21
导航目录
TPS40057PWPG4数据手册
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5
TPS40054
,
TPS40055
,
TPS40057
www.ti.com.cn
ZHCSAK8I –DECEMBER 2003–REVISED DECEMBER 2014
版权 © 2003–2014, Texas Instruments Incorporated
(1) Ensured by design. Not production tested.
(2) I
KFF
increases with SYNC frequency, maximum duty cycle decreases with I
KFF
.
6.4 Electrical Characteristics
T
A
= –40°C to 85° C, V
IN
= 24 V
dc
, R
T
= 90.9 kΩ, I
KFF
= 150 µA, f
SW
= 500 kHz, all parameters at zero power dissipation
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT SUPPLY
V
IN
Input voltage range, VIN 8 40 V
OPERATING CURRENT
I
DD
Quiescent current Output drivers not switching, V
FB
≥ 0.75 V 1.5 3.0 mA
BP5
V
BP5
Output voltage I
O
≤ 1 mA 4.7 5 5.2 V
OSCILLATOR/RAMP GENERATOR
f
OSC
Accuracy 8 V ≤ V
IN
≤ 40 V 470 520 570 kHz
V
RAMP
PWM ramp voltage
(1)
V
PEAK
– V
VAL
2
V
V
IH
High-level input voltage, SYNC 2
V
IL
Low-level input voltage, SYNC 0.8 V
I
SYNC
Input current, SYNC 5 10 µA
Pulse width, SYNC 50 ns
V
RT
RT voltage 2.38 2.5 2.58 V
D
MAX
Maximum duty cycle
V
FB
= 0 V, f
SW
≤ 500 kHz 85% 94%
V
FB
= 0 V, 500 kHz ≤ f
SW
≤ 1 MHz
(1)
80%
Minumum duty cycle V
FB
≥ 0.75 V 0%
V
KFF
Feed-forward voltage 3.35 3.48 3.65 V
I
KFF
Feed-forward current operating range
(1) (2)
20 1100 µA
SOFT-START
I
SS/SD
Soft-start source current 1.65 2.35 2.95 µA
V
SS/SD
Soft-start clamp voltage 3.7 V
t
DSCH
Discharge time C
SS/SD
= 220 pF 1.6 2.2 2.8
µs
t
SS/SD
Soft-start time C
SS/SD
= 220 pF, 0 V ≤ V
SS/SD
≤ 1.6 V 115 150 215
BP10
V
BP10
Output voltage I
O
≤ 1 mA 9.0 9.6 10.3 V
ERROR AMPLIFIER
V
FB
Feedback input voltage
8 V ≤ V
IN
≤ 40 V, T
A
= 25°C 0.698 0.7 0.704
V8 V ≤ V
IN
≤ 40 V, 0°C ≤ T
A
≤ 85°C 0.693 0.7 0.707
8 V ≤ V
IN
≤ 40 V, -40°C≤ T
A
≤ 85°C 0.693 0.7 0.715
G
BW
Gain bandwidth
(1)
3.0 5 MHz
A
VOL
Open loop gain 60 80 dB
I
OH
High-level output source current 2.0 4
mA
I
OL
Low-level output sink current 2.0 4
V
OH
High-level output voltage I
SOURCE
= 500 µA 3.2 3.5
V
V
OL
Low-level output voltage I
SINK
= 500 µA 0.2 0.35
I
BIAS
Input bias current V
FB
= 0.7 V 100 200 nA
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