Datasheet 搜索 > DC/DC转换器 > TI（德州仪器） > UC3825BDWTR 数据手册 > UC3825BDWTR 数据手册 4/19 页
器件3D模型￥ 81.374
UC3825BDWTR 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DC/DC转换器
封装:
SOIC-16
描述:
高速PWM控制器 HIGH-SPEED PWM CONTROLLER
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P2Hot
原理图在P1P11
封装尺寸在P12P13P14P15P17P18
型号编码规则在P2
标记信息在P12P13P14P15
封装信息在P12P13P14P15P16P17P18
技术参数、封装参数在P3
应用领域在P16P19
电气规格在P4P5
导航目录
UC3825BDWTR数据手册
Page:
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UC1823A, UC2823A, UC2823B,
UC3823A, UC3823B, UC1825A,
UC2825A, UC2825B, UC3825A, UC3825B
SLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010
www.ti.com
4
ELECTRICAL CHARACTERISTICS
T
A
= −55°C to 125°C for the UC1823A/UC1825A, T
A
= −40°C to 85°C for the UC2823x/UC2825x, T
A
= 0°C to 70°C for the UC3823x/UC3825x,
R
T
= 3.65 kΩ, C
T
= 1 nF, V
CC
= 12 V, T
A
= T
J
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
REFERENCE, V
REF
V
O
Ouput voltage range T
J
= 25°C, I
O
= 1 mA 5.05 5.1 5.15 V
Line regulation 12 V ≤ VCC ≤ 20 V 2 15
mV
Load regulation 1 mA ≤ I
O
≤ 10 mA 5 20
mV
Total output variation Line, load, temperature 5.03 5.17 V
Temperature stability
(1)
T
(min)
< T
A
< T
(max)
0.2 0.4 mV/°C
Output noise voltage
(1)
10 Hz < f < 10 kHz 50 μV
RMS
Long term stability
(1)
T
J
= 125°C, 1000 hours 5 25 mV
Short circuit current VREF = 0 V 30 60 90 mA
OSCILLATOR
f
Initial accuracy
(1)
T
J
= 25°C 375 400 425 kHz
f
OSC
Initial accuracy
(1)
R
T
= 6.6 kΩ, C
T
= 220 pF, T
A
= 25°C 0.9 1 1.1 MHz
Total variation
(1)
Line, temperature 350 450 kHz
Total variation
(1)
R
T
= 6.6 kΩ, C
T
= 220 pF, 0.85 1.15 MHz
Voltage stability 12 V < VCC < 20 V 1%
Temperature stability
(1)
T
(min)
< T
A
< T
(max)
+/− 5%
High-level output voltage, clock 3.7 4
Low-level output voltage, clock 0 0.2
Ramp peak 2.6 2.8 3
V
Ramp valley 0.7 1 1.25
V
Ramp valley-to-peak 1.6 1.8 2
I
OSC
Oscillator discharge current R
T
= OPEN, V
CT
= 2 V 9 10 11 mA
ERROR AMPLIFIER
Input offset voltage 2 10 mV
Input bias current 0.6 3
A
Input offset current 0.1 1
μA
Open loop gain 1 V < V
O
< 4 V 60 95
CMRR Common mode rejection ratio 1.5 V < V
CM
< 5.5 V 75 95
dB
PSRR Power supply rejection ratio 12 V < V
CC
< 20 V 85 110
dB
I
O(sink)
Output sink current V
EAOUT
= 1 V 1 2.5
mA
I
O(src)
Output source current V
EAOUT
= 4 V −1.3 −0.5
mA
High-level output voltage I
EAOUT
= −0.5 mA 4.5 4.7 5
V
Low-level output voltage I
EAOUT
= −1 mA 0 0.5 1
V
Gain bandwidth product f = 200 kHz 6 12 Mhz
Slew rate
(1)
6 9 V/μs
(1)
Ensured by design. Not production tested.
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