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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： | 27/31页 |
| 文件大小： | 615K |
| 代理商： | TPS43000PWRG4 |
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TPS43000
SLUS489 OCTOBER 2001
5
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)
PWM
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
BUCK threshold voltage
BUCK configured if VBUCK > 1 V
0.4
0.7
1.0
V
BUCK pull-down current
BUCK configured if VBUCK > 1 V
0.5
1.0
A
BUCK maximum duty cycle
VFB = 0 V
100%
BOOST maximum duty cycle
BUCK grounded,
VFB = 0 V
70%
90%
Minimum duty cycle
VFB = 2 V
0%
CCM threshold voltage
Continuous conduction allowed if
0.4
0.7
1.0
V
CCM pull-down current
Continuous conduction allowed if
VCCM > 1 V
0.5
1.0
A
BUCK rectifier zero current threshold voltage
Measured from SWP to GND
28
12
0
mV
BOOST rectifier zero current threshold voltage
Measured from SWP to VOUT,
BUCK grounded
0
14
32
mV
Delay to termination of P-channel gate drive time
Measured at PDRV,
BUCK grounded
200
300
ns
pulsed frequency modulation
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PFM threshold voltage
PFM mode not allowed if PFM > 1 V
0.4
0.7
1.0
V
PFM pull-down current
PFM mode not allowed if PFM > 1 V
0.5
1.0
A
FB voltage to awaken (exit sleep mode)
768
784
800
mV
Izero pulses required to enter sleep
5
7
9
Start-up delay time after sleep
2
5
s
low power mode
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOUT threshold voltage to enter low power mode
VP = VIN = 5 V
3.45
3.60
3.80
VIN threshold voltage to enter low power mode
VP = VOUT = 5 V,
BUCK grounded (boost configured)
3.45
3.60
3.80
V
Hysteresis voltage to exit low power mode
VOUT < (VTHRESHOLDVHYST),
VP = VIN = 5 V
225
312
415
Hysteresis voltage to exit low power mode
VIN < (VTHRESHOLDVHYST),
BUCK grounded,
VP = VOUT = 5 V
225
312
415
mV
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