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參數(shù)資料
型號: TPS51220ARTVR
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: DUAL SWITCHING CONTROLLER, 333 kHz SWITCHING FREQ-MAX, PQCC32
封裝: 5 X 5 MM, PLASTIC, QFN-32
文件頁數(shù): 50/53頁
文件大小: 1380K
代理商: TPS51220ARTVR
SLUS897D – DECEMBER 2008 – REVISED FEBRUARY 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range, EN = 3.3V, VIN = 12V, V5SW = 5V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT SENSE
RTV package,
28
31
35
TA = 0 to 85°C
TRIP=0V/ 2V, 2V<CSNx<12.6V
RSN package ,
28
31
34
TA = 0 to 85°C
Current limit threshold
VOCL-ULV
mV
(ultra-low voltage)
TA = –40 to 85°C
27
31
37
TA = 0 to 85°C
27
31
36
TRIP=0V/ 2V, 0.95V<CSNx<12.6V
TA = –40 to 85°C
25
31
42
TA = 0 to 85°C
56
60
65
TRIP=3.3V/ 5V, 2V<CSNx<12.6V
TA = –40 to 85°C
55
60
68
Current limit threshold
VOCL-LV
mV
(low voltage)
TA = 0 to 85°C
55
60
67
TRIP=3.3V/ 5V,
0.95V<CSNx<12.6V
TA = –40 to 85°C
54
60
72
Positive
5
VZCAJ
Auto-Zero cross adjustable offset range
0.95V < CSNx < 12.6V, Auto-skip
mV
Negative
–5
VZC
Zero cross detection comparator Offset
0.95V < CSNx < 12.6V, OOA
–4
0
4
mV
TA = 0 to 85°C
–23
–31
–40
Negative current limit threshold
TRIP = 0V/2V, 0.95V < CSNx <
VOCLN-ULV
(ultra-low voltage)
12.6V
TA = –40 to 85°C
–22
–31
–44
mV
TA = 0 to 85°C
–50
–60
–73
Negative current limit threshold
TRIP = 3.3V/5V, 0.95V < CSNx <
VOCLN-LV
(low voltage)
12.6V
TA = –40 to 85°C
–49
–60
–77
OUTPUT DRIVERS
Source, V(VBST-DRVH) = 0.1 V
1.7
5
RDRVH
DRVH resistance
Sink, V(DRVH-SW) = 0.1 V
1
3
Source, V(VREG5-DRVL) = 0.1 V
1.3
4
RDRVL
DRVL resistance
Sink, V(DRVL-GND) = 0.1 V
0.7
2
UVP, OVP AND UVLO
VOVP
OVP Trip Threshold
OVP detect
110%
115%
120%
tOVPDLY
OVP Prop Delay
1.5
ms
VUVP
UVP Trip Threshold
UVP detect
65%
70%
73%
tUVPDLY
UVP Delay
0.8
1
1.2
ms
Wake up
1.7
1.8
1.9
V
VUVREF2
VREF2 UVLO Threshold
Hysteresis
75
100
125
mV
Wake up
3
3.1
3.2
VUVREG3
VREG3 UVLO Threshold
V
Hysteresis
0.10
0.15
0.20
Wake up
4.1
4.2
4.3
V
VUVREG5
VREG5 UVLO Threshold
Hysteresis
0.35
0.40
0.44
V
6
Copyright 2008–2010, Texas Instruments Incorporated
Product Folder Link(s) :TPS51220A
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