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参数资料
型号： TPS2228PWPG4
厂商： TEXAS INSTRUMENTS INC
元件分类： 电源管理
英文描述： 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
封装： GREEN, PLASTIC, HTSSOP-20
文件页数： 23/30页
文件大小： 696K
代理商： TPS2228PWPG4
TPS2228
TPS2221
SLVS419C MAY 2002 REVISED DECEMBER 2008
www.ti.com
3
ELECTRICAL CHARACTERISTICS
TJ = 40°C to 100°C, VI(5VIN) = 5 V, VI(3.3VIN) = 3.3 V, VI(1.8VIN) = 1.8 V, all outputs unloaded (unless otherwise noted)(1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER SWITCH
3.3VIN to XVCC with two switches on
TJ = 25°C, I = 750 mA each
72
95
m
3.3VIN to XVCC with two switches on
for dual
TJ = 100°C, I = 750 mA each
120
m
5VIN to XVCC with two switches on
TJ = 25°C, I = 500 mA each
97
125
m
5VIN to XVCC with two switches on
for dual
TJ = 100°C, I = 500 mA each
160
m
Switch resistance
1.8VIN to XVPP/VCORE with two
TJ = 25°C, I = 375 mA each
69
95
m
Switch resistance
1.8VIN to XVPP/VCORE with two
switches on for dual
TJ = 100°C, I = 375 mA each
120
m
3.3VIN to XVPP/VCORE with two
TJ = 25°C, I = 250 mA each
196
260
m
3.3VIN to XVPP/VCORE with two
switches on for dual
TJ = 100°C, I = 250 mA each
325
m
5VIN to XVPP/VCORE with two
TJ = 25°C, I = 100 mA each
0.9
1.3
5VIN to XVPP/VCORE with two
switches on for dual
TJ = 100°C, I = 100 mA each
1.6
RO(XVCC) discharge resistance
Idischarge = 1 mA
0.1
0.5
k
RO(XVPP/VCORE) discharge resistance
Idischarge = 1 mA
0.1
0.5
k
IO(XVCC)
Limit
(limit is
th
t
d
TJ at 25°C, output powered into a short
1
1.5
A
I
Short circuit
IO(XVCC)
3.3VIN or 5VIN to XVCC
(
the steady
state
value.)
TJ [40, 100°C], output powered into a short
1
2.5
A
IOS Short-circuit
output current(1)
IO(XVPP/VCORE)
Limit
TJ at 25°C, output powered into a short
120
175
mA
output current(1)
IO(XVPP/VCORE)
5VIN to XVPP/VCORE
Limit
TJ [40, 100°C], output powered into a short
120
300
mA
IO(XVPP/VCORE)
1 8VIN or 3 3VIN to
Limit
TJ at 25°C, output powered into a short
500
680
mA
1.8VIN or 3.3VIN to
XVPP/VCORE
Limit
TJ [40, 100°C], output powered into a short
500
1250
mA
Trip point T
Rising temperature, not in overcurrent condition
155
165
°C
Thermal shutdown
Trip point, TJ
Overcurrent condition
120
130
°C
Thermal shutdown
Hysteresis
10
VO(xVCC) = 5 V, 100 m short to GND,
TJ = 25°C
10
VO(xVCC) = 3.3 V, 100 m short to GND,
TJ = 25°C
20
Current limit response time(2)(3)
VO(xVPP/VCORE) = 5 V, 100 m short to GND,
TJ = 25°C
2
s
VO(xVPP/VCORE) = 3.3 V, 100 m short to GND
TJ = 25°C
35
VO(xVPP/VCORE) = 1.8 V, 100 m short to GND,
TJ = 25°C
250
Nl
ti
f
II (3.3VIN)
V
95
140
Normal operation of
TPS2228
II(5VIN)
VO(xVCC) = VO(xVPP/VCORE) = VI(3.3VIN),
Output pins are floated
5
10
A
TPS2228
II (1.8VIN)
Output pins are floated
5
A
I It Q i
t
Nl
ti
f
II (3.3VIN)
V
64
100
Ii Input Quiescent
current
Normal operation of
TPS2221
II(5VIN)
VO(xVCC) = VO(xVPP/VCORE) = VI(3.3VIN),
Output pins are floated
5
10
A
current
TPS2221
II (1.8VIN)
Output pins are floated
5
A
Shutdown mode (based
on control data)
II (3.3VIN)
Ot
t i
fl
td
5
A
VO(xVCC) = Hi-Z
II (5VIN)
Output pins are floated
5
A
VO(xVPP/VCORE) = Hi-Z
II (1.8VIN)
5
(1) Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.
(2) Specified by design, not tested in production.
(3) From application of short to 110% of final current limit.
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