參數(shù)資料
型號： TPIC74100QPWPRQ1
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 2.5 A SWITCHING REGULATOR, 440 kHz SWITCHING FREQ-MAX, PDSO20
封裝： GREEN, PLASTIC, HTSSOP-20
文件頁數(shù)： 27/30頁
文件大小： 781K
代理商： TPIC74100QPWPRQ1
www.ti.com
BUCK/BOOST SWITCH-MODE REGULATOR
SLIS125 – DECEMBER 2006
ELECTRICAL CHARACTERISTICS (continued)
V
(driver) = 6 V to 17 V, TA = -40°C to 125°C, unless otherwise noted
Parameters
TEST CONDITIONS
Min
Typ
Max
Unit
RESET
V(th)
RESET threshold voltage
4.51
4.65
4.79
V
V(RESET)
RESET tolerance
3%
C(REST) = 10 nF
8
10
12
t(RESET)
RESET time
ms
C(REST)= 100 nF, see Note (5)
80
100
120
Isink = 5 mA
450
VOL
RESET output low voltage
mV
Isink = 1 mA
84
t(deglitch)
RESET deglitch time
See Note(5)
8
10
12.5
s
Alarm
VI
Alarm input-voltage range
–0.5
40
V
VIL
Alarm threshold low voltage
2.2
2.3
2.35
V
VIH
Alarm threshold high voltage
2.43
2.5
2.58
V
V(hys)
Hysteresis voltage
200
mV
Isink = 5 mA
450
VOL
Alarm output low voltage
mV
Isink = 1 mA
84
Low-Power Mode (Pulse Mode) PFM
IO(LPM)
Load current in low-power mode
V(driver) < 7 V
50
mA
II(avg)
Average input current
V(driver) = 11 V, IO = 5 mA, CLP = low
3.55
mA
VO
Output-voltage tolerance
VO = 5 V
2.4%
3%
Digital Low-Power Mode (CLP)
High-level CLP input threshold
VIH
Normal mode
2.6
V
voltage
Low-level CLP input threshold
VIL
Low-power mode
1.15
V
voltage
Switching Parameters
f(sw)
Switching frequency
V(Rmod) = 0 V, modulator OFF
440
kHz
f(sw) = 440 kHz
18%
f(sw)ac
Operating-frequency accuracy
f(sw) = 440 kHz
20%
f(sw)min
Modulation minimum frequency
270
330
445
kHz
f(sw)max
Modulation maximum frequency
450
550
680
kHz
f(mod)span
Modulation span
220
kHz
f(mod)
Modulation frequency
Rmod = 12 k ±1%
28
kHz
f(mod)ac
Modulation-frequency accuracy
12%
(5)
Ensured by characterization.
6
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