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参数资料
| 型号： | TPS2220BDBG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24 |
| 封装： | GREEN, PLASTIC, SSOP-24 |
| 文件页数： | 23/31页 |
| 文件大小： | 774K |
| 代理商： | TPS2220BDBG4 |
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RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
TPS2220B
SLVS554 – JANUARY 2005
MIN
MAX
UNIT
VI(3.3V)(1)
3
3.6
Input voltage, VI(3.3V) is required for all circuit
operations. 5V and 12V are only required for
VI(5V)
3
5.5
V
their respective functions.
VI(12V)
7
13.5
IO(AVCC) at TJ = 100°C
1
A
IO
Output current
IO(AVPP) at TJ = 100°C
100
mA
f(clock)
Clock frequency
2.5
MHz
Data
200
Latch
250
tw
Pulse duration
ns
Clock
100
Reset
100
th
Data-to-clock hold time (see Figure 2)
100
ns
tsu
Data-to-clock setup time (see Figure 2)
100
ns
100
ns
250
ns
TJ
Operating virtual junction temperature (maximum to be calculated at worst case PD at 85°C ambient)
–40
100
°C
(1)
It is understood that for VI(3.3V) < 3 V, voltages within the absolute maximum ratings applied to pin 5V or pin 12V do not damage the IC.
T
J = 25°C, VI(5V) = 5 V, VI(3.3V) = 3.3 V, VI(12V) = 12 V, all outputs unloaded (unless otherwise noted)
PARAMETER
TEST CONDITIONS(1)
MIN
TYP
MAX
UNIT
POWER SWITCH
IO = 750 mA each
85
110
3.3V to AVCC
IO = 750 mA each, TJ = 100°C
110
140
m
IO = 500 mA each
95
130
5V to AVCC
IO = 500 mA each, TJ = 100°C
120
160
Static drain-source
rDS(on)
on-state resistance
IO = 50 mA each
0.8
1
3.3V or 5V to AVPP
IO = 50 mA each, TJ = 100°C
1
1.3
IO = 50 mA each
2
2.5
12V to AVPP
IO = 50 mA each, TJ = 100°C
2.5
3.4
Discharge at AVCC
IO(disc) = 1 mA
0.5
0.7
1
Output discharge
k
resistance
Discharge at AVPP
IO(disc) = 1 mA
0.2
0.4
0.5
IOS(AVCC)
1
1.4
2
A
Limit (steady-state value), output
powered into a short circuit
IOS(AVPP)
120
200
300
mA
IOS
Short-circuit output current
Limit (steady-state value), output
IOS(AVCC)
1
1.4
2
A
powered into a short circuit,
IOS(AVPP)
120
200
300
mA
TJ = 100°C
Thermal trip point
Rising temperature
135
Thermal shutdown
TJ
°C
temperature
Hysteresis
10
5V to AVCC = 5 V, with 100-m
short to GND
10
Current-limit response time(2)(3)
s
5V to AVPP = 5 V, with 100-m
short to GND
3
II(3.3V)
140
200
Normal
VO(AVCC) = VO(AVPP) = 3.3 V and
II(5V)
8
12
operation
also for RESET = 0 V
II(12V)
100
180
Input current, quiesc-
II
A
ent
II(3.3V)
0.3
2
Shutdown mode
II(5V)
VO(AVCC) = VO(AVPP) = Hi-Z
0.1
2
II(12V)
0.3
2
(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.
3
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