参数资料
型号: TPS3813K33DBVTG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6
封装: GREEN, PLASTIC, SOT-23, 6 PIN
文件页数: 13/18页
文件大小: 536K
代理商: TPS3813K33DBVTG4
SLVS331E – DECEMBER 2000 – REVISED OCTOBER 2010
www.ti.com
TIMING REQUIREMENTS
At RL = 1 M, CL = 50 pF, and TA = –40°C to +85°C.
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
tw
Pulse width at VDD
VDD = VIT– + 0.2 V, VDD = VIT– – 0.2 V
3
ms
SWITCHING CHARACTERISTICS
At RL = 1 M, CL = 50 pF, and TA = -40°C to +85°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
td
Delay time
VDD ≥ VIT + 0.2 V, See timing diagram
20
25
30
ms
WDT = 0 V
0.2
0.25
0.3
s
tt(out)
Watchdog time-out
Upper limit
WDT = VDD
2
2.5
3
WDT = programmable (1)
See (2)
ms
WDR = 0 V, WDT = 0 V
1:31.8
WDR = 0 V, WDT = VDD
1:32
WDR = 0 V, WDT = programmable
1:25.8
Watchdog window ratio
WDR = VDD, WDT = 0 V
1:124.9
WDR = VDD, WDT = VDD
1:127.7
WDR = VDD, WDT = programmable
1:64.5
Propagation (delay) time,
tPHL
VDD to RESET delay
VIL = VIT – 0.2 V, VIH = VIT + 0.2 V
30
50
ms
high-to-low-level output
(1)
155 pF < C(ext) < 63 nF
(2)
(C(ext) ÷ 15.55 pF + 1) × 6.25 ms
Table 1. TPS3813 FUNCTION/TRUTH TABLE
VDD > VIT
RESET
0
L
1
H
4
Copyright 2000–2010, Texas Instruments Incorporated
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