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参数资料
| 型号： | TPS43000PWRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | GREEN, TSSOP-16 |
| 文件页数： | 26/31页 |
| 文件大小： | 615K |
| 代理商： | TPS43000PWRG4 |
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TPS43000
SLUS489 OCTOBER 2001
4
www.ti.com
electrical characteristics over recommended operating junction temperature range,
TA = 40_C to 85_C for the TPS43000, RT = 75 k (500 kHz), VIN = VP = 3.5 V, VOUT = 3.1 V, COMP/FB
pins shorted, BUCK-configured, TA = TJ (unless otherwise noted)
soft-start
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RT = 37.5 k
(1 MHz)
1.0
3.0
6.0
ms
Soft-start time
RT = 75 k
(500 kHz)
2.0
5.5
12.0
ms
Soft-start time
RT = 150 k
(250 kHz)
4.0
10.5
24.0
oscillator
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
RT = 37.5 k
(1 MHz),
VCOMP = 600 mV
0.90
1.00
1.10
MHz
Oscillator frequency
RT = 75 k
(500 kHz),
VCOMP = 600 mV
450
500
550
kHz
Oscillator frequency
RT = 150 k
(250 kHz),
VCOMP = 600 mV
225
250
280
kHz
SYNC/SD
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Synchronization threshold voltage
0.8
1.25
1.6
V
SYNC pulse width
SYNC/SD = 2 V,
COMP/FB=600 mV
100
50
ns
SYNC input current
SYNC/SD = 1.6 V
0.5
1
A
SYNC high to shutdown delay time
Float COMP,
VFB = 0 V
10
22
35
s
Synchronous range
Force COMP/FB to 600 mV
1.1 fo
1.5 fo
current limit
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Hiccup overcurrent threshold voltage
Voltage measured from VIN to SWN
175
250
325
mV
Delay to termination of P-channel gate drive time
Measured at PDRV
125
300
ns
BOOST configured hiccup overcurrent threshold
voltage
Voltage measured from SWN to GND,
BUCK grounded
175
250
325
mV
Delay to termination of N-channel gate drive time
Measured at NDRV,
BUCK grounded
150
300
ns
Consecutive overcurrent clock cycles before
shutdown
50
63
75
Clock cycles before restart
800
900
1000
CCS threshold voltage
Constant current source configured if
0.40
0.70
1.00
V
CCS pull-down current
Constant current source configured if
VCCS > 1 V
0.5
1.0
A
CCS current threshold voltage
Measured from VIN to SWN
85
150
225
BOOST-configured CCS current threshold voltage
Measured from SWN to GND,
BUCK grounded
85
150
225
mV
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