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FDS6690AS датащи(PDF) 6 Page - Texas Instruments

номер детали FDS6690AS
подробное описание детали  Dual-Synchronous, Step-Down Controller with Out-of-Audio??Operation and 100-mA LDOs for Notebook System Power
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI - Texas Instruments

FDS6690AS датащи(HTML) 6 Page - Texas Instruments

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DEVICE INFORMATION
TPS51123
SLUS890 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
Table 1. TERMINAL FUNCTIONS TABLE
TERMINAL
I/O
DESCRIPTION
NAME
NO.
DRVH1
21
O
High-side N-channel MOSFET driver outputs. LL referenced drivers.
DRVH2
10
DRVL1
19
O
Low-side N-channel MOSFET driver outputs. GND referenced drivers.
DRVL2
12
Master enable input.
EN0
13
I/O
Open : LDOs on, and ready to turn both switcher channels.
GND : disable all circuit
Channel 1 and Channel 2 enable input. Pull up to the voltage ranging 3.3-V to 5-V to turn on both
ENC
18
I
switcher channels. Short to ground to shutdown them.
GND
15
Ground.
LL1
20
I
Switch node connections for high-side drivers, current limit and control circuitry.
LL2
11
PGOOD
23
O
Powergood window comparator output for channel 1 and 2. (Logical AND)
Selection pin for operation mode:
OOA auto skip : Connect to VREG3 or VREG5
SKIPSEL
14
I
PWM only: Connect to VREF
Auto skip: Connect to GND
TRIP1
1
I/O
OCL trip setting pins. Connect resistor from this pin to GND to set threshold for synchronous RDS(on)
sense.
TRIP2
6
On-time adjustment pin.
365 kHz/460 kHz setting: connect to VREG5
TONSEL
4
I
300 kHz/375 kHz setting: connect to VREG3
245 kHz/305 kHz setting: connect to VREF
200 kHz/250 kHz setting: connect to GND
VBST1
22
I
Supply input for high-side N-channel MOSFET driver (boost terminal).
VBST2
9
VFB1
2
I
SMPS feedback inputs. Connect with feedback resistor divider.
VFB2
5
VIN
16
I
High voltage power supply input for 5-V/3.3-V LDO.
VO1
24
Output connection to SMPS. These terminals work as fixed voltage inputs and output discharge
I/O
inputs. VO1 and VO2 also work as 5-V and 3.3-V switch over return power input respectively.
VO2
7
2-V reference voltage output. Connect 220-nF to 1-
µF ceramic capacitor to Signal GND near the
VREF
3
O
device.
3.3-V power supply output. Connect a 10-
µF ceramic capacitor to Power GND near the device. A
VREG3
8
O
1-
µF ceramic capacitor is acceptable when not loaded.
VREG5
17
O
5-V power supply output. Connect a 33-
µF ceramic capacitor to Power GND near the device.
6
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS51123


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