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)： 20/25頁
文件大小： 556K
代理商： TPS53353DQPT
SLUSAK2
– AUGUST 2011
ELECTRICAL CHARACTERISTICS
Over recommended free-air temperature range, VVDD=12 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWERGOOD
PG in from lower
92.5%
95.0%
98.5%
VTHPG
PG threshold
PG in from higher
107.5%
110.0%
112.5%
PG hysteresis
2.5%
5.0%
7.5%
RPG
PG transistor on-resistance
15
30
55
Ω
tPGDEL
PG delay
Delay for PG in
0.8
1
1.2
ms
LOGIC THRESHOLD AND SETTING CONDITIONS
Enable
1.8
VEN
EN Voltage
V
Disable
0.6
IEN
EN Input current
VEN = 5 V
1.0
A
RRF = 0 Ω to GND, TA = 25°C
(1)
200
250
300
RRF = 187 kΩ to GND, TA = 25°C
(1)
250
300
350
RRF = 619 kΩ, to GND, TA = 25°C
(1)
350
400
450
RRF = Open, TA= 25°C
(1)
450
500
550
fSW
Switching frequency
kHz
RRF = 866 kΩ to VREG, TA = 25°C
(1)
580
650
720
RRF = 309 kΩ to VREG, TA = 25°C
(1)
670
750
820
RRF = 124 kΩ to VREG, TA = 25°C
(1)
770
850
930
RRF = 0 Ω to VREG, TA = 25°C
(1)
880
970
1070
PROTECTION: CURRENT SENSE
ITRIP
TRIP source current
VTRIP = 1 V, TA = 25°C
9.4
10.0
10.6
A
TCITRIP
TRIP current temperature coeffficient
On the basis of 25
°C(2)
4700
ppm/
°C
VTRIP
Current limit threshold setting range
VTRIP-GND
0.4
1.2
V
VTRIP = 1.2 V
32.0
37.5
43.0
VOCL
Current limit threshold
mV
VTRIP = 0.4
7.5
12.5
17.5
VTRIP = 1.2 V
–160
–150
–140
mV
VOCLN
Negative current limit threshold
VTRIP = 0.4 V
–58
–50
–42
VAZCADJ
Auto zero cross adjustable range
Positive
3
15
mV
Negative
–15
–3
PROTECTION: UVP and OVP
VOVP
OVP trip threshold
OVP detect
115%
120%
125%
tOVPDEL
OVP proprogation delay
VFB delay with 50-mV overdrive
1
s
VUVP
Output UVP trip threshold
UVP detect
65%
70%
75%
tUVPDEL
Output UVP proprogation delay
0.8
1.0
1.2
ms
tUVPEN
Output UVP enable delay
From enable to UVP workable
1.8
2.6
3.2
ms
UVLO
Wake up
4.00
4.20
4.33
VUVVREG
VREG UVLO threshold
V
Hysteresis
0.25
THERMAL SHUTDOWN
Shutdown temperature(2)
145
TSDN
Thermal shutdown threshold
°C
Hysteresis(2)
10
(1)
Not production tested. Test condition is VIN= 12 V, VOUT= 1.1 V, IOUT = 10 A using application circuit shown in Figure 1.
(2)
Ensured by design. Not production tested.
4
Copyright
2011, Texas Instruments Incorporated
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