參數(shù)資料
型號(hào)： TPS54350MPWPREP
廠(chǎng)商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 7.2 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO16
封裝： GREEN, PLASTIC, HTSSOP-16
文件頁(yè)數(shù)： 31/36頁(yè)
文件大小： 1057K
代理商： TPS54350MPWPREP
www.ti.com
ELECTRICAL CHARACTERISTICS
TPS54350-EP
SGLS308 – OCTOBER 2005
T
J = –55°C to 125°C, VIN = 4.5 V to 20 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
Operating current, PH pin open, no
5
external low side MOSFET, RT = Hi-Z
IQ
Quiescent current
mA
Shutdown, ENA = 0 V
1
Start threshold voltage
4.32
4.52
V
VIN
Stop threshold voltage
3.63
3.97
V
Hysteresis
350
mV
UNDER VOLTAGE LOCK OUT (UVLO PIN)
Start threshold voltage
1.2
1.28
V
UVLO
Stop threshold voltage
1.02
1.1
V
Hysteresis
100
mV
BIAS VOLTAGE (VBIAS PIN)
IVBIAS = 1 mA, VIN ≥ 12 V
7.5
7.8
8.035
VBIAS
Output voltage
V
IVBIAS = 1 mA, VIN = 4.5 V
4.4
4.47
4.5
REFERENCE SYSTEM ACCURACY
TJ = 25°C
0.888
0.891
0.896
Reference voltage
V
0.88
0.891
0.899
OSCILLATOR (RT PIN)
RT grounded
183
250
300
Internally set PWM switching frequency
kHz
RT open
396
500
600
Externally set PWM switching frequency
RT = 100 k
(1% resistor to AGND)
400
500
595
kHz
FALLING EDGE TRIGGERED BIDIRECTIONAL SYNC SYSTEM (SYNC PIN)
SYNC out low-to-high rise time (10%/90%)(1)
25 pF to ground
200
500
ns
SYNC out high-to-low fall time (90%/10%) (1)
25 pF to ground
5
10
ns
Falling edge delay time(1)
Delay from rising edge to rising edge
180
deg
of PH pins, See Figure 19
Minimum input pulsewidth(1)
RT = 100 k
100
ns
Delay (falling edge SYNC to rising edge PH) (1)
RT = 100 k
360
ns
SYNC out high level voltage
50-k
resistor to ground, no pullup
2.5
resistor
SYNC out low level voltage
0.6
V
SYNC in low level threshold
0.8
V
SYNC in high level threshold
2.3
V
Percentage of programmed frequency
–10%
10%
SYNC in frequency range(1)
225
770
kHz
FEED-FORWARD MODULATOR (INTERNAL SIGNAL)
Modulator gain
VIN = 12 V, TJ = 25°C
8
V/V
Modulator gain variation
–25%
25%
Minimum controllable ON time(1)
180
ns
Maximum duty factor(1)
VIN = 4.5 V
80%
86%
ERROR AMPLIFIER (VSENSE AND COMP PINS)
Error amplifier open loop voltage gain(1)
60
80
dB
Error amplifier unity gain bandwidth(1)
1
2.8
MHz
Input bias current, VSENSE pin (1)
500
nA
COMP
Output voltage slew rate (symmetric)(1)
1.5
V/s
(1)
Ensured by design, not production tested.
4
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參數(shù)描述
TPS54350MPWPREPG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 4.5 to 20V Input,3A Step Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWP 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 4.5 to 20V Inp 3A Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWP 制造商:Texas Instruments 功能描述:IC's
TPS54350PWPG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 4.5 to 20V Inp 3A Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54350PWPR 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 4.5 to 20V Inp 3A Step-Down Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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