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参数资料
| 型号： | TPS54225PWPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 4.5 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | GREEN, PLASTIC, HTSSOP-14 |
| 文件页数： | 17/23页 |
| 文件大小： | 733K |
| 代理商： | TPS54225PWPR |
SLVSA15C
– OCTOBER 2009 – REVISED FEBRUARY 2011
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
UNIT
VCC
Supply input voltage range
4.5
18
V
VIN
Power input voltage range
2
18
V
VBST
–0.1
24
VBST (vs SW1, SW2)
–0.1
5.7
SS, PG
–0.1
5.7
EN
–0.1
18
VI
Input voltage range
V
VO, VFB
–0.1
5.5
SW1, SW2
–1.8
18
SW1, SW2 (10 ns transient)
–3
18
PGND1, PGND2
–0.1
0.1
VO
Output voltage range
VREG5
–0.1
5.7
V
IO
Output current range
IVREG5
0
10
mA
TA
Operating free-air temperature
–40
85
°C
TJ
Operating junction temperature
–40
125
°C
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range, VCC, VIN = 12V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
Operating - non-switching supply
VCC current, TA = 25°C, EN = 5 V,
IVCC
800
1200
μA
current
VFB = 0.8 V
IVCCSDN
Shutdown supply current
VCC current, TA = 25°C, EN = 0 V
1.8
10
μA
LOGIC THRESHOLD
VENH
EN high-level input voltage
EN
2
V
VENL
EN low-level input voltage
EN
0.4
V
VFB VOLTAGE AND DISCHARGE RESISTANCE
TA = 25°C, VO = 1.05 V
757
765
773
VFB
Threshold voltage
TA = 0°C to 85°C, VO = 1.05 V
(1)
753
777
mV
TA = -40°C to 85°C, VO = 1.05 V
(1)
751
779
IVFB
Input current
VFB = 0.8 V, TA = 25°C
0
±0.1
μA
RDischg
VO discharge resistance
EN = 0 V, VO = 0.5 V, TA = 25°C
50
100
VREG5 OUTPUT
TA = 25°C, 6 V < VCC < 18 V,
VVREG5
Output voltage
5.3
5.5
5.7
V
0
< IVREG5 < 5 mA
VLN5
Line regulation
6 V
< VCC < 18 V, IVREG5 = 5 mA
20
mV
VLD5
Load regulation
0 mA
< IVREG5 < 5 mA
100
mV
IVREG5
Output current
VCC = 6 V, VREG5 = 4 V, TA = 25°C
70
mA
MOSFET
RDS(on)h
High side switch resistance
25
°C, VBST - SW1, SW2 = 5.5 V
160
m
RDS(on)l
Low side switch resistance
25
°C
110
m
CURRENT LIMIT
Iocl
Current limit
LOUT = 2.2H
(1)
2.5
3.1
4.5
A
THERMAL SHUTDOWN
Shutdown temperature (1)
150
TSDN
Thermal shutdown threshold
°C
Hysteresis (1)
25
ON-TIME TIMER CONTROL
(1)
Specified by Design (not production tested).
2009–2011, Texas Instruments Incorporated
3
Product Folder Link(s): TPS54225
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