参数资料
型号: UCC28250PW
厂商: Texas Instruments
文件页数: 5/53页
文件大小: 0K
描述: IC REG CTRLR PWM CM/VM 20-TSSOP
标准包装: 70
PWM 型: 电流/电压模式
输出数: 1
频率 - 最大: 1MHz
占空比: 100%
电源电压: 4.7 V ~ 17 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
包装: 管件
其它名称: 296-27776-5
UCC28250PW-ND
SLUSA29C – APRIL 2010 – REVISED JULY 2011
ELECTRICAL CHARACTERISTICS (1) (continued)
VDD = 12 V, 1- μ F capacitor from VDD and VREF to GND, T A = T J = -40 ° C to 125 ° C, RT = 75 k Ω connected to ground to set
F SW = 200 kHz (unless otherwise noted).
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNITS
OVP/OTP Comparator
V OVP
I OVP
Internal reference
Internal current
0.66
8.5
0.70
11.0
0.74
13.5
V
μ A
Primary Outputs
Rise/fall time
C LOAD = 100 pF
8
ns
R SRC
R SNK
Output source resistance
Output sink resistance
I OUT = 20 mA
I OUT = 20 mA
12
4
20
12
35
30
Ω
Synchronous Rectifier Outputs
Rise/fall time
C LOAD = 100 pF
8
ns
R SRC
R SNK
Output source resistance
Output sink resistance
I OUT = 20 mA, VDD = 12 V
I OUT = 20 mA, VDD = 5 V
I OUT = 20 mA, VDD = 12 V
12
15
4
20
25
12
35
45
30
Ω
PS = VREF
-5.0
0
7.5
TD PS
Primary off to secondary on
dead time
PS = 27 k Ω
27
40
50
ns
PS = 27 k Ω , 25 ° C
SP = VREF
37
-5.0
40
0
43
7.5
TD SP
Secondary off to primary on
dead time
SP = 20 k Ω
30
40
50
ns
SP = 20 k Ω , 25 ° C
37
40
43
Copyright ? 2010 – 2011, Texas Instruments Incorporated
Product Folder Link(s): UCC28250
5
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