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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： | 5/30页 |
| 文件大小： | 696K |
| 代理商： | TPS2228PWPG4 |
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TPS2228
TPS2221
SLVS419C MAY 2002 REVISED DECEMBER 2008
www.ti.com
13
PARAMETER MEASUREMENT INFORMATION
Terminal Functions (Dual-Serial)
TERMINAL
NO.
I/O
DESCRIPTION
NAME
2228
(DB30)
2228
(PWP20)
I/O
DESCRIPTION
1.8VIN
6, 28
5, 19
I
1.8-V input for card power (xVPP/VCORE).
Pins 6 and 28 must be connected together externally.
3.3VIN
15, 16,
17
11, 12
I
3.3-V input for card power (xVCC and xVPP/Vcore) and chip power (3.3VIN must be
connected to a voltage source for the device to operate)
5VIN
1, 2, 30
1, 20
I
5-V input for card power (xVCC and xVPP/Vcore)
AVCC
9, 10, 11
7, 8
O
Switched output that delivers 0 V, 3.3 V, 5 V, or high impedance to card
AVPP/VCORE
8
6
O
Switched output that delivers 0 V, 1.8 V, 3.3 V, 5 V, or high impedance to card
BVCC
20, 21,
22
14, 15
O
Switched output that delivers 0 V, 3.3 V, 5 V, or high impedance to card
BVPP/VCORE
23
17
O
Switched output that delivers 0 V, 1.8 V, 3.3 V, 5 V, or high impedance to card
CLOCK
4
3
I
Logic-level clock for serial data word
DATA
3
2
I
Logic-level serial data word
GND
12
9
Ground
LATCH
5
4
I
Logic-level latch for serial data word, an internal pulldown is provided
NC
7,13,19,
24, 26,
27, 29
16
No internal connection
OC
18
13
O
Open-drain output that is asserted low when an overcurrent condition exists.
RESET
14
10
I
Logic-level RESET input. Asynchronous command active low. An internal pullup is provided.
When active, all line switches are off and all the output discharge switches are on.
SHDN
25
18
I
Hi-Z (open) all switches. Identical function to serial shutdown with D8=0. Asynchronous com-
mand active low. An internal pullup is provided.
Terminal Functions (Single Parallel)
TERMINAL
NO.
I/O
DESCRIPTION
NAME
2221
(PWP14)
I/O
DESCRIPTION
1.8VIN
10
I
1.8-V input for card power (VPP/VCORE)
3.3VIN
3
I
3.3-V input for card power (VCC and VPP/Vcore) and chip power (3.3VIN must be connected to a voltage
source for the device to operate)
5VIN
6
I
5-V input for card power (VCC and VPP/Vcore)
GND
7
Ground
OC
9
O
Open-drain output that is asserted low when an overcurrent condition exists.
SHDN_RST
8
I
Hi-Z (open) all switches. Identical function to serial shutdown mode by parallel data VD (3:0).
Asynchronous command active low. An internal pullup is provided.
VCC
4, 5
O
Switched output that delivers 0 V, 3.3 V, 5 V, or high impedance to card
VD0
2
I
Parallel control signal 0 (see Table 2. TPS2221 Control Logic)
VD1
1
I
Parallel control signal 1 (see Table 2. TPS2221 Control Logic)
VD2
14
I
Parallel control signal 2 (see Table 2. TPS2221 Control Logic)
VD3
13
I
Parallel control signal 3 (see Table 2. TPS2221 Control Logic)
VPP/VCORE
11, 12
O
Switched output that delivers 0 V, 1.8 V, 3.3 V, 5 V, or high impedance to card
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