SC2434 Просмотр технического описания (PDF) - Semtech Corporation
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SC2434 Datasheet PDF : 19 Pages
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SC2434
POWER MANAGEMENT
Pin Configuration
Ordering Information
PRELIMINARY
VID4
VID3
VID2
VID1
VID0
PGIN
ERROUT
PGOUT
FB
OSCREF
Top View
(20-Pin SOIC or TSSOP)
VCC
BGOUT
OUT1
OUT2
OUT3
PC
AGND
OC-
OC+
DACREF
Device
SC2434SWTR (1)
Package
SOIC-20
Temp. Range
(TA)
0 - 70oC
SC2434TSTR (1)
TSSOP-20
0 - 70oC
SC2434SWTRT (1,2)
SOIC-20
0 - 70oC
SC2434TSTRT (1,2) TSSOP-20
0 - 70oC
SC2434EVB (3)
Evaluation Board
Note:
(1) Only available in tape and reel packaging. A reel
contains 1000 devices for the SOIC-20 and 2500 devices
for the TSSOP-20 package.
(2) Lead free package. Devices are fully WEEE and RoHS
compliant.
(3) Specify SOIC-20 or TSSOP-20 package.
Pin Descriptions
Pin#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Name Pin Function
VID4 MSB
VID3
VID2
VID1
VID0 LSB
PGIN Power good input. Connect this pin to regulator output through a resistor divider.
ERROUT Error-amplifier output.
PGOUT Power good output signal (open collector).
FB
Error-amplifier inverting input.
OSCREF Oscillator frequency setting.
DACREF DAC current setting.
OC+ Supply input current sense, positive input.
OC- Supply input current sense, negative input.
AGND Analog ground pin.
PC Phase control. Leave it floating or high for 3 phase operaton. Ground it for 2 phase operation.
OUT3 PWM output for phase 3. When PC pin is grounded OUT3 is disabled.
OUT2 PWM output for phase 2.
OUT1 PWM output for phase 1.
BGOUT Bandgap reference.
VCC Chip positive supply.
2005 Semtech Corp.
4
www.semtech.com
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