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參數(shù)資料
| 型號： | UCC2919DTR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封裝： | GREEN, PLASTIC, MS-012AC, SOIC-16 |
| 文件頁數(shù)： | 22/27頁 |
| 文件大?。?/td> | 701K |
| 代理商： | UCC2919DTR |
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UCC2919
UCC3919
SLUS374C JULY 1999 REVISED NOVEMBER 2005
4
www.ti.com
electrical characteristics, VDD = 5 V, TA = 0°C to 70°C for the UCC3919, –40°C to 85°C for the
UCC2919, all voltages are with respect to GND, TA = TJ, (unless otherwise specified)
current sense
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Over current comparator offset
Referred to CSP,
3 V
≤ VDD ≤ 8 V
–55
–50
–45
mV
Linear current amplifier offset
VIMAX = 100 mV, referred to CSP,
3 V
≤ VDD ≤ 8 V
–120
–100
–80
mV
Linear current amplifier offset
VIMAX = 400 mV, referred to CSP,
3 V
≤ VDD ≤ 8 V
–440
–400
–360
mV
Overload comparator offset
VIMAX = 100 mV, referred to CSP,
3 V
≤ VDD ≤ 8 V
–360
–300
–240
mV
CSN input common mode voltage
range
Referred to VDD,
3 V
See Note 1
–1.5
0.2
V
CSP input common mode voltage
range
Referred to VDD,
3 V
≤ VDD ≤ 8 V,
See Note 1
0
0.2
V
Input bias current CSN
1
5
A
Input bias current CSP
100
200
A
current fault timer
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
CT charge current
VCT = 1 V
–56
–35
–16
A
CT discharge current
VCT = 1 V
0.5
1.2
1.9
A
On time duty cycle in fault
IPL = 0
1.5
3
6
%
CT fault threshold
1.0
1.5
1.7
V
CT reset threshold
0.25
0.5
0.75
V
IMAX
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input bias current
VIMAX = 100 mV,
referred to CSP
–1
0
1
A
power limiting
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Voltage on PL
IPL = –250 A,
referred to VDD
–1.0
–1.4
–1.9
V
Voltage on PL
IPL = –1.5 mA,
referred to VDD
–0.5
–1.8
–2.2
V
On time duty cycle in fault
IPL = –250 A
0.25
0.5
1
%
On time duty cycle in fault
IPL = –1.5 mA
0.05
0.1
0.2
%
NOTES:
1. Ensured by design. Not 100% production tested.
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