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UC2914N датащи(PDF) 4 Page - Texas Instruments

номер детали UC2914N
подробное описание детали  5-V TO 35-V HOT SWAP POWER MANAGER
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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UC2914N датащи(HTML) 4 Page - Texas Instruments

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UC2914
UC3914
SLUS425C − DECEMBER 2003 − REVISED JULY 2004
4
www.ti.com
ELECTRICAL CHARACTERISTICS
TA = 0°C to 70°C for the UC3914, −40°C to 85°C for the UC2914, VCC = 12V, VPUMP = VPUMP(max), SD = 5 V, CP1 = CP2 = CPUMP= 0.01 µF.
TA = TJ. (Unless otherwise specified)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CHARGE PUMP
fOSC,
fOSCB
Oscillator frequency
OSC, OSCB
60
150
250
kHz
VOH
High-level output voltage
IOSC = −5 mA
10.0
11.0
11.6
V
VOL
Low-level output voltage
IOSC = 5 mA
0.2
0.5
V
Output clamp voltage
VCC = 25 V
18.5
20.5
22.5
V
ILIM
Output current limit
High side only
−20
−10
−3
mA
Pump diode voltage drop
IDIODE = 10 mA,
measured from PMP to
PMPB, PMPB to VPUMP
0.5
0.9
1.3
PMP clamp voltage
VCC = 25 V
18.5
20.5
22.5
VPUMP maximum voltage
VVOUTS = VCC charge pump disable threshold,
VCC = 12 V
20
22
24
VPUMP maximum voltage
VVOUTS = VCC charge pump disable threshold,
VCC = 35 V
42
45
48
V
VPUMP hysteresis
VVOUTS = VCC charge pump re-enable
threshold,
VCC = 12 V
0.3
0.7
1.4
VPUMP hysteresis
VVOUTS = VCC charge pump re-enable
threshold,
VCC = 35 V
0.25
0.70
1.40
REFERENCE
REF output voltage
wrt VCC
−2.25
−2.00
−1.75
V
REF current limit
12.5
20.0
50.0
mA
Load regulation
1 mA
≤ IVREF ≤ 5 mA
25
60
mV
Line regulation
5 V
≤ VVCC ≤ 35 V
25
100
mV
FAULT
Low-level output voltage
IFAULT = 1 mA
100
200
mV
Output leakage
VFAULT = 35 V
10
500
nA
LATCH
Latch release threshold voltage
High-to-low
0.6
1.4
2.0
V
Input current
VLR = 5 V
500
750
µA
POWER LIMITING
Duty cycle control
IPLIM = 200 µA
In fault mode
0.6%
1.3%
2.0%
Duty cycle control
IPLIM = 3 mA
In fault mode
0.05%
0.12%
0.20%
OVERLOAD
Delay-to-output time(1)
500
1250
ns
Threshold voltage
wrt IMAX
−250
−200
−150
mV
(1) Ensured by design. Not production tested.
(2) A mathematical averaging is used to determine this value. See Application Section for more information.


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