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参数资料
| 型号： | TPS40304ADRCT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, PQCC10 |
| 封装： | 3 X 3 MM, GREEN, PLASTIC, SON-10 |
| 文件页数： | 14/20页 |
| 文件大小： | 508K |
| 代理商： | TPS40304ADRCT |
www.ti.com
SLUSA30 – FEBRUARY 2010
ELECTRICAL CHARACTERISTICS
TJ = –40°C to 125°C, VVDD = 12 V, all parameters at zero power dissipation (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOLTAGE REFERENCE
TJ = 25°C, 3 V < VVDD < 20 V
588
591
594
VFB
FB input voltage
mV
–40°C < TJ < 125°C,
585
591
597
3 V < VVDD < 20 V
INPUT SUPPLY
VVDD
Input supply voltage range
3
20
V
IDDSD
Shutdown supply current
VEN/SS < 0.2 V
70
100
A
IDDQ
Quiescent, non-switching
Let EN/SS float, VFB = 1 V
2.5
3.5
mA
ENABLE/SOFT-START
VIH
High-level input voltage, EN/SS
0.55
0.70
1.00
V
VIL
Low-level input voltage, EN/SS
0.27
0.30
0.33
V
ISS
Soft-start source current
8
10
12
A
VSS
Soft-start voltage level
0.4
0.8
1.3
V
BP REGULATOR
VBP
Output voltage
IBP = 10 mA
6.2
6.5
6.8
V
VDO
Regulator dropout voltage, VVDD – VBP
IBP = 25 mA, VVDD = 3 V
70
110
mV
OSCILLATOR
fSW
PWM frequency
3 V < VVDD < 20 V
540
600
660
kHz
VRAMP
(1)
Ramp amplitude
VVDD/6.6
VVDD/6
VVDD/5.4
V
Frequency spread spectrum frequency
fSWFSS
12%
fSW
deviation
fMOD
Modulation frequency
25
KHz
PWM
DMAX
(1)
Maximum duty cycle
VFB = 0 V, 3 V < VVDD < 20 V
90%
tON(min)
(1)
Minimum controllable pulse width
45
75
ns
HDRV off to LDRV on
5
25
35
tDEAD
Output driver dead time
ns
LDRV off to HDRV on
5
25
30
ERROR AMPLIFIER
GBWP
(1)
Gain bandwidth product
10
24
MHz
AOL
(1)
Open loop gain
60
dB
IIB
Input bias current (current out of FB pin)
VFB = 0.6 V
75
nA
IEAOP
Output source current
VFB = 0 V
2
mA
IEAOM
Output sink current
VFB = 1 V
2
(1)
Ensured by design. Not production tested.
Copyright 2010, Texas Instruments Incorporated
3
Product Folder Link(s) :TPS40304A
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