ltc3869gn-2 Linear Technology Corporation, ltc3869gn-2 Datasheet - Page 40

• Manufacturer Part Number: ltc3869gn-2
• Description: Ltc3869/ltc3869-2 - Dual, 2-phase Synchronous Step-down Dc/dc Controllers
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIONS
RELATED PARTS
LTC3869/LTC3869-2
PART NUMBER DESCRIPTION
LTC3850/
LTC3850-1/
LTC3850-2
LTC3860
LTC3855
LTC3890
LTC3856
LTC3853
LTC3851A/
LTC3851A-1
LTC3833
40
V
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
OUT1
3.3V
5A
Dual 2-Phase, High Efficiency Synchronous Step-Down DC/DC
Controller, R
Dual, Multiphase, Synchronous Step-Down DC/DC Controller with
Differential Amplifier and Tri-State Output Drive
Dual, Multiphase, Synchronous Step-Down DC/DC Controller with
Differential Amplifier and DCR Temperature Compensation
Dual, High V
2-Phase, Single Output Synchronous Step-Down DC/DC Controller
with Differential Amplifier and DCR Temperature Compensation
Triple Output, Multiphase Synchronous Step-Down DC/DC Controller,
R
No R
Controller
Fast Controlled On-Time, High Frequency Synchronous
Step-Down Controller with Differential Amplifier
SENSE
+
L1: TDK RLF 7030T-2R2M5R4
L2: TDK ULF10045T-3R3N6R9
C
C
OUT1
OUT2
SENSE
8mΩ
2.2µH
C
220µF
or DCR Current Sensing and Tracking
L2
OUT1
90.9k
15pF
: SANYO 4TPE220MF
: SANYO 6TPE150MI
1%
●
™ Wide V
FAX: [phone]
Si4816BDY
SENSE
IN
Low I
M1
20k
1%
or DCR Current Sensing and Tracking
IN
Q
Synchronous Step-Down DC/DC Controller
Range Synchronous Step-Down DC/DC
10k
1%
1000pF
4.7µF
0.1µF
10Ω
10Ω
100pF
1000pF
3.3V/5A, 5V/5A Converter Using Sense Resistors
●
www.linear.com
D3
0.1µF
MODE/PLLIN
I
RUN1
TG1
BOOST1
SW1
BG1
SENSE1
SENSE1
V
I
LIM
TH1
TK/SS1
FB1
V
IN
2.2Ω
+
–
LTC3869
PGOOD INTV
SGND
1µF
SENSE2
SENSE2
BOOST2
TK/SS2
EXTV
PGND
RUN2
FREQ
SW2
V
CC
BG2
I
TG2
TH2
FB2
CC
COMMENTS
Phase-Lockable Fixed 250kHz to 780kHz Frequency,
4V ≤ V
Operates with Power Blocks, DRMOS Devices or External Drivers/
MOSFETs, 3V ≤ V
Phase-Lockable Fixed Frequency 250kHz to 770kHz,
4.5V ≤ V
PLL Capable Fixed Frequency 50kHz to 900kHz,
4V ≤ V
Phase-Lockable Fixed 250kHz to 770kHz Frequency,
4.5V ≤ V
Phase-Lockable Fixed 250kHz to 750kHz Frequency,
4V ≤ V
PLL Fixed Frequency 250kHz to 750kHz, 4V ≤ V
0.8V ≤ V
Up to 2MHz Operating Frequency, 4V ≤ V
0.8V ≤ V
+
–
0.1µF
D4
IN
IN
IN
IN
IN
OUT
OUT
≤ 30V, 0.8V ≤ V
≤ 60V, 0.8V ≤ V
≤ 24V, V
122k
1%
≤ 38V, 0.8V ≤ V
≤ 38V, 0.8V ≤ V
0.1µF
≤ 5.25V, MSOP-16E, 3mm × 3mm QFN-16, SSOP-16
≤ 5.5V, 3mm × 4mm QFN-20, TSSOP-20E
1000pF
10Ω
10Ω
OUT3
15k
1%
IN
1000pF
≤ 24V, t
Up to 13.5V
OUT
OUT
OUT
OUT
ON(MIN)
100pF
≤ 5.25V
≤ 24V, I
Si4816BDY
 LINEAR TECHNOLOGY CORPORATION 2011
≤ 12V
≤ 5V
M2
= 20ns
Q
20k
1%
10pF
147k
1%
= 50µA
3.3µH
22µF
50V
L2
8mΩ
IN
≤ 38V,
+
LT 0211 • PRINTED IN USA
V
7V TO
24V
IN
3869 TA02
IN
C
150µF
OUT2
≤ 38V,
V
5V
5A
OUT2
3869f