LTC2974CUP-PBF Datasheet, PDF (98/98 Pages) Linear Technology – 4-Channel PMBus Power System Manager

LTC2974
TYPICAL APPLICATION
VIN _TG
SWX
BG
DC/DC
CONVERTER
VFB
RUN/SS SGND
PGND
330nF
MMBT3906
VIN _TG
SWX
BG
DC/DC
CONVERTER
VFB
RUN/SS SGND
PGND
330nF
MMBT3906
INTERMEDIATE
BUS
0V
3.3V
0.1µF
3.3V
0.1µF
9 65 28 13 14 11 12 10 36 35 51 52 55 56 59 60 8
15 _TSENSE0
TSENSE2 ²⁷
LOAD
53 _VDAC0
1 _VSENSEP0
2
VSENSEM0
42
ISENSEM0
41
ISENSEP0
3
VOUT_EN0
0.1µF
38
REFP
40
REFM
16 _TSENSE1
LTC2974
VDAC2 ⁵⁷
VSENSEP2 ⁶¹
62
VSENSEM2
46
ISENSEM2
45
ISENSEP2
5
VOUT_EN2
19
GND
20
GND
21
GND
37
GND
39
GND
TSENSE3 ³⁴
LOAD
3.3V
54 _VDAC1
63 _VSENSEP1
VDAC3 ⁵⁸
VSENSEP3 ⁴⁹
64
VSENSEM1
44
ISENSEM1
43
ISENSEP1
4
VOUT_EN1
7
AUXFAULTB
10k
10k
5.49k
10k
10k
10k
50
VSENSEM3
48
ISENSEM3
47
ISENSEP3
6
VOUT_EN3
26 25 18 29 30 31 17 23 22 33 32 24
10k
10k
10k
10k
10k
10k
LOAD
LOAD
3.3V
TO/FROM OTHER LTC2974s, LTC2978s AND MICROCONTROLLER
330nF
MMBT3906
TG ^VIN
SWX
BG
DC/DC
CONVERTER
VFB
SGND RUN/SS
PGND
330nF
MMBT3906
TG ^VIN
SWX
BG
DC/DC
CONVERTER
VFB
SGND RUN/SS
PGND
2974 TA02
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LTC2970
Dual I²C Power Supply Monitor and Margining Controller 5V to 15V, 0.5% TUE 14-Bit ADC, 8-Bit DAC, Temperature Sensor
LTC2977
8-Channel PMBus Power System Manager
0.25% TUE 16-Bit ADC, Voltage/Temperature Monitoring and Supervision
LTC3880
Dual Output PolyPhase Step-Down DC/DC Controller 0.5% TUE 16-Bit ADC, Voltage/Current/Temperature Monitoring and Supervision
LTC3883
Single Output PolyPhase Step-Down DC/DC Controller 0.5% TUE 16-Bit ADC, Voltage/Current/Temperature Monitoring and Supervision
98 ^{Linear Technology Corporation}
1630 McCarthy Blvd., Milpitas,
[phone] ^● FAX: [phone]
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www.linear.com/LTC2974
2974fa
LT 0513 REV A • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2012