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LTC4449 Datasheet(PDF) 108 Page - Linear Technology

Part # LTC4449
Description  Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management
PDF  108 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4449 Datasheet(HTML) 108 Page - Linear Technology

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LTC3882-1
108
Rev A
For more information www.analog.com
ANALOG DEVICES, INC. 2015-2018
D16873-0-5/18A
www.analog.com
RELATED PARTS
TYPICAL APPLICATION
Figure 56. 1V/40A and 1.8V/30A 500kHz Converter with DrMOS Power Stage
PART NUMBER DESCRIPTION
COMMENTS
LTM4676A
Dual 13A or Single 26A Step-Down DC/DC µModule
Regulator with Digital Power Management
VIN Up to 26.5V; 0.5V ≤ VOUT (±0.5%) ≤ 5.4V, ±2% IOUT ADC Accuracy,
Fault Logging, I2C/PMBus Interface, 16mm × 16mm × 5mm, BGA
Package
LTC3887/
LTC3887-1
Dual Output PolyPhase Step-Down DC/DC Controller with
Digital Power System Management
VIN Up to 24V, 0.5V ≤ VOUT0,1 ≤ 5.5V, I2C/PMBus Interface, with
EEPROM and 16-Bit ADC. –1 Version Operates with DrMOS and Power
Blocks
LTC3886
60V Dual Output Step-Down Controller with Digital Power
System Management
VIN Up to 60V, 0.5V ≤ VOUT ≤ 13.8V, Analog Control Loop, I2C/
PMBus Interface with EEPROM and 16-Bit ADC, Programmable Loop
Compensation
LTC3880/
LTC3880-1
Dual Output PolyPhase Step-Down DC/DC Controller with
Digital Power System Management
VIN Up to 24V, 0.5V ≤ VOUT ≤ 5.5V, Analog Control Loop, I2C/PMBus
Interface with EEPROM and 16-Bit ADC
LTC3883/
LTC3883-1
Single Phase Step-Down DC/DC Controller with Digital Power
System Management
VIN Up to 24V, 0.5V ≤ VOUT ≤ 5.5V, Input Current Sense Amplifier, I2C/
PMBus Interface with EEPROM and 16-Bit ADC
LTC2977
8-Channel PMBus Power System Manager Featuring
Accurate Output Voltage Measurement
Fault Logging to Internal EEPROM Monitors Eight Output Voltages, Input
Voltage and Die Temperature
LTC2974
Quad Digital Power Supply Manager with EEPROM
Controls and Monitors Four Outputs, 16-Bit ADC, Differential Inputs,
with Fault Logging
LTC3774
Dual, Multiphase Current Mode Synchronous Controller for
Sub-Milliohm DCR Sensing, with Remote Sense
Operates with Power Blocks, DrMOS Devices or External MOSFETs 4.5V
≤ VIN ≤ 38V
LTC3861
Dual, Multiphase, Synchronous Step-Down DC/DC Controller
with Accurate Current Share
Operates with Power Blocks, DrMOS Devices or External MOSFETs 3V≤
VIN ≤ 24V
LTC4449
High Speed Synchronous N-Channel MOSFET Driver
VIN Up to 38V, 4V ≤ VCC ≤ 6.5V, Adaptive Shoot-Through Protection,
2mm × 3mm DFN-8 Package
LTC3882-1
SCL
RUN1
RUN0
RUN
ISENSE0+
ISENSE0–
VSENSE0+
VSENSE0–
4.99k
FAULT0
FAULT1
SHARE_CLK
SYNC
FB0
COMP0
TSNS0
7.32k
100pF
TSNS1
GND
38821 F56
IAVG_GND
PWM0
PGOOD0
VSENSE1+
VSENSE1–
ISENSE1–
ISENSE1+
PWM1
PGOOD1
41
5
27
26
31
32
33
34
29
28
3
2
1
40
35
36
37
38
6
7
30
39
21
20
19
18
17
16
23
8
15
14
13
12
11
10
9
FB1
4.99k
10k
10k
10k
SDA
ALERT
220pF
137
10nF
COMP1
4.7µF
VCC
25
1µF
VDD25
VDD25
22
2.2µF
VDD33
VCC
VDD25
VDD33
VDD33
24
100nF
330µF
×2
VINSNS
4
1
VOUT0_CFG
ASEL1
ASEL0
VOUT1_CFG
FREQ_CFG
PHAS_CFG
IAVG1
IAVG0
4.99k
17.4k
16.2k
10k
VIN
7V TO 14V
+
10nF
PLACE Q1,Q2 NEAR L1, L2 RESPECTIVELY
Q1
10nF
Q2
1.21k
0.22µF
L1
0.22µH
PULSE
1.21k
0.22µF
L2
0.22µH
PULSE
100µF
×4
470µF
×4
VOUT1
1V, 40A
GND
+
100µF
×4
470µF
×4
VOUT0
1.8V, 30A
GND
+
FDMF6820A
VIN PHASE GH CGND GND BOOT VDRV VCIN
5VBIAS
SMOD
PGND
CGND
GL
VSWH
VIN
PWM
DISB
PWM0
100k
7.32k
100pF
220pF
137
10nF
PWM1
1µF
PWM1
RUN
2.2µF
2k
10
22µF
×2
1µF
FDMF6820A
VIN PHASE GH CGND GND BOOT VDRV VCIN
5VBIAS
SMOD
PGND
CGND
GL
VSWH
VIN
PWM
DISB
1µF
PWM0
RUN
2.2µF
2k
10
22µF
×2
1µF
DrMOS: FAIRCHILD FD6802A
INPUT SUPPLY +5V TO +12V
+5V INPUT SUPPLY
VDD33
100k



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