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参数资料
| 型号： | TB7004FL |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC56 |
| 封装： | 8 X 8 MM, PLASTIC, QFN-56 |
| 文件页数： | 10/16页 |
| 文件大小： | 264K |
| 代理商： | TB7004FL |
TB7004FL
2008-05-23
3
Pin Configuration
Pin Description
Symbol
Pin No.
Description
Notes
CGND
1, 6, 51, Tab
Signal ground for control circuitry
Connect to PGND.
NC
2
No-connect pin
VGIN
3
Power supply for low-side MOSFET gate drive
VCIN
4
Power supply for control circuitry
BOOT
5
Bootstrap capacitor connection
GH
7
High-side MOSFET gate signal
For monitoring purposes
VIN
8 to 20, Tab
Input pins. Connected to an input of the on-chip the DC-DC converter.
VSWH
21, 40 to 50, Tab Output pins. Output inductor connection
PGND
22 to 39
Power ground
GL
52
Low-side MOSFET gate signal
For monitoring purposes
THDN
53
Open-drain output that indicates that thermal shutdown (TSD) has been
tripped. An external pull-up resistor should be added to the THDN pin.
Held Low in thermal shutdown mode.
REG5V
54
Internal 5-V regulator output
DISBL#
55
Disable signal for internal circuitry. Setting DISBL# High enables internal
circuitry. Setting DISBL# Low disables internal circuitry.
Accepts both 5-V and
12-V signals.
PWM
56
3-state enable input
VIN
(Bottom View)
VSWH
CGND
PWM
DISBL#
REG5V
THDN
GL
CGND
VSWH
CGN
D
NC
VG
IN
VCIN
BO
OT
CGN
D
GH
VIN
VSWH
PGND
VSWH
PG
ND
PG
ND
PG
ND
PG
ND
PG
ND
PG
ND
PG
ND
PG
ND
PG
ND
PG
ND
PG
ND
43
44
45
46
47
48
49
50
51
52
53
54
55
56
1
2
3
4
5
6
7
8
9
10
11
12 13 14
42 41 40 39 38 37 36 35 34 33 32 31 30 29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
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