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TPS5602DBT Datasheet

  • TPS5602DBT

  • DUAL, FAST, HIGH EFFICIENCY CONTROLLER FOR DSP POWER

  • 740.27KB

  • 24頁

  • TI

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TPS5602
DUAL, FAST, HIGH EFFICIENCY CONTROLLER FOR DSP POWER
SLVS217 鈥?JUNE 1999
D
D
D
D
D
D
D
D
D
D
D
Independent Dual Channels
Hysteretic Control for Fast Transient
Response
4.5-V to 25-V Input Voltage Range
Adjustable Output Voltage Down to 1.2 V
Synchronous Rectifier Enables Efficiencies
of >95%
Minimized External Component Count
Separate Standby Control and Over Current
Protection
Low Supply Current . . . 0.8 mA Typ
30-Pin TSSOP
Low Standby Current (1-碌A maximum)
EVM Available (TPS5602EVM-121)
DBT PACKAGE
(TOP VIEW)
description
INV1
NC
SOFTSTART1
NC
C
T
NC
GND
REF
STBY1
STBY2
V
CC
COMP
SOFTSTART2
NC
INV2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
LH1
OUT1_u
LL1
OUT1_d
OUTGND1
TRIP1
V
CC
SENSE
TRIP2
Vref5
REG5V_IN
OUTGND2
OUT2_d
LL2
OUT2_u
LH2
The TPS5602 is a dual-channel synchronous
NC 鈥?No internal connection
buck switch-mode power supply controller
featuring very fast feedback control and minimized component count. By using the hysteretic control method,
it is ideal for high-transient current applications, such as 鈥機6000 and multiple 鈥機54x DSPs. The TPS5602 is
designed specifically for DSP applications that require high efficiency. Since both channels are independent,
the up and down power sequencing can be easily achieved by properly setting the standby pins. The wide input
voltage and adjustable output voltage make the TPS5602 suitable for many applications.
typical design
5V
+
C3
GND
D1
R3
R2
C4
L1
C7
OUT1
1.8 V
C1
R5
C2
R6
C8
R1
L2
C5
R4
OUT2
3.3 V
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
漏
1999, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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