參數(shù)資料
型號： TPS53353DQPT
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, PDSO22
封裝： 5 X 6 MM, ROHS COMPLIANT, PLASTIC, SON-22
文件頁數(shù)： 19/25頁
文件大?。?/td> 556K
代理商： TPS53353DQPT
SLUSAK2
– AUGUST 2011
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
VALUE
UNIT
MIN
MAX
VIN (main supply)
3
15
VDD
4.5
25
Input voltage range
VBST
4.5
28
V
VBST(with respect to LL)
4.5
6.5
EN, TRIP, VFB, RF, MODE
–0.1
6.5
Output voltage range
LL
–1
22
V
PGOOD, VREG
–0.1
6.5
Junction temperature range, TJ
–40
125
°C
ELECTRICAL CHARACTERISTICS
Over recommended free-air temperature range, VVDD=12 V (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
VIN pin power conversion input
VVIN
3
15
V
voltage
VVDD
Supply input voltage
4.5
25.0
V
IVIN(leak)
VIN pin leakage current
VEN = 0 V
1
A
IVDD
VDD supply current
TA = 25°C, No load, VEN = 5 V, VVFB = 0.630 V
420
590
A
IVDDSDN
VDD shutdown current
TA = 25°C, No load, VEN = 0 V
10
A
INTERNAL REFERENCE VOLTAGE
VVFB
VFB regulation voltage
CCM condition(1)
0.600
V
TA = 25°C
0.597
0.600
0.603
VVFB
VFB regulation voltage
0
°C ≤ TA ≤ 85°C
0.5952
0.600
0.6048
V
–40°C ≤ TA ≤ 85°C
0.594
0.600
0.606
IVFB
VFB input current
VVFB = 0.630 V, TA = 25°C
0.01
0.20
A
LDO OUTPUT
VVREG
LDO output voltage
0 mA
≤ IVREG ≤ 30 mA
4.77
5.00
5.36
V
IVREG
LDO output current(1)
Maximum current allowed from LDO
30
mA
VDO
Low drop out voltage
VVDD = 4.5 V, IVREG = 30 mA
230
mV
BOOT STRAP SWITCH
VFBST
Forward voltage
VVREG-VBST, IF = 10 mA, TA = 25°C
0.1
0.2
V
IVBSTLK
VBST leakage current
VVBST = 23 V, VSW = 17 V, TA = 25°C
0.01
1.50
A
DUTY AND FREQUENCY CONTROL
tOFF(min)
Minimum off time
TA = 25°C
150
260
400
ns
VIN = 17 V, VOUT = 0.6 V, RRF = 39 kΩ,
tON(min)
Minimum on time
35
ns
TA = 25 °C
(1)
SOFT START
RMODE = 39 kΩ
0.7
RMODE = 100 kΩ
1.4
Internal soft-start time from
tSS
ms
VOUT = 0 V to 95% of VOUT
RMODE = 200 kΩ
2.8
RMODE = 470 kΩ
5.6
INTERNAL MOSFETs
RDS(on)H
High-side MOSFET on-resistance
TA = 25 °C
5.5
m
Ω
RDS(on)L
Low-side MOSFET on-resistance
TA = 25 °C
2.2
(1)
Ensured by design. Not production tested.
Copyright
2011, Texas Instruments Incorporated
3
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