LTC1929-PG LINER [Linear Technology], LTC1929-PG Datasheet - Page 28

• Manufacturer Part Number: LTC1929-PG
• Description: 2-Phase, High Efficiency,Synchronous Step-Down Switching Regulators
• Manufacturer: LINER [Linear Technology]

LTC1929/LTC1929-PG
TYPICAL APPLICATIO
RELATED PARTS
PART NUMBER
LTC1438/LTC1439
LTC1438-ADJ
LTC1538-AUX
LTC1539
LTC1435/LTC1435A
LTC1436A-PLL
LTC1628/LTC1628-PG Dual High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator
LTC1629/LTC1629-PG PolyPhase High Efficiency Controller
LTC1702/LTC1703
LTC1735
LTC1736
Adaptive Power and Burst Mode are trademarks of Linear Technology Corporation.
28
INTV
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
47k
CC
2.7k
15k
3.3nF
10k
1000pF
0.1 F
DESCRIPTION
Dual High Efficiency Low Noise Synchronous Step-Down Switching Regulators POR, Auxiliary Regulator
Dual Synchronous Controller with Auxiliary Regulator
Dual High Efficiency Low Noise Synchronous Step-Down Switching Regulator
Dual High Efficiency Low Noise Synchronous Step-Down Switching Regulator
High Efficiency Synchronous Step-Down Switching Regulator
High Efficiency Low Noise Synchronous Step-Down Switching Regulator
Dual High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator
High Efficiency Synchronous Step-Down Controller
High Efficiency Synchronous Step-Down Controller with 5-Bit VID
100pF
470pF
15k
51k
10k
1000pF
Figure 13. 2V/20A CPU Power Supply with Active Voltage Positioning
10
11
12
13
14
1
2
3
4
5
6
7
8
9
U
RUN/SS
SENSE1
SENSE1
EAIN
PLLFLTR
PLLIN
NC
I
SGND
V
V
V
SENSE2
SENSE2
TH
DIFFOUT
OS
OS
LTC1929-PG
–
+
+
–
–
+
BOOST1
BOOST2
EXTV
PGOOD
INTV
PGND
SW1
SW2
BG1
BG2
TG1
TG2
V
NC
CC
CC
IN
28
27
26
25
24
23
22
21
20
19
18
17
16
15
5V (OPT)
0.22 F
10 F
0.22 F
PGOOD
100k
1929 F13
10
0.1 F
M1
M3
47 F 35V
+
C
L1
L2
IN
COMMENTS
POR, External Feedback Divider
Auxiliary Regulator, 5V Standby
5V Standby, POR, Low-Battery, Aux Regulator
Burst Mode
Adaptive Power
Constant Frequency, Standby, 5V and 3.3V LDOs
Expandable Up to 12 Phases, G-28, Up to 120A
500kHz, 25MHz GBW
Burst Mode Operation, 16-Pin Narrow SSOP,
Fault Protection, 3.5V V
Output Fault Protection, Power Good, GN-24,
3.5V V
M4
0.004
M2
0.004
IN
D1
MBRS140T3
D2
MBRS140T3
SWITCHING FREQUENCY = 200kHz
C
C
L1 TO L2: 1.5 H SUMIDA CEP125-1R5MC
M1 TO M4: FAIRCHILD FDS7760A
TM
IN
OUT
C
LINEAR TECHNOLOGY CORPORATION 1999
36V, 0.8V V
OUT
: 5A RIPPLE CURRENT RATING REQUIRED
Operation, 16-Pin Narrow SO
: 4 180 F/4V PANASONIC SP
+
TM
1929f LT/TP 0500 4K • PRINTED IN USA
Mode, 24-Pin SSOP
IN
OUT
V
5V TO 28V
V
2V
20A
36V
IN
OUT
6V