Datasheet LTM4630A (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Dual 18A or Single 36A DC/DC μModule Regulator |
| Pages / Page | 38 / 1 — FEATURES. DESCRIPTION. Dual 18A or Single 36A Output. Input Voltage … |
| File Format / Size | PDF / 1.9 Mb |
| Document Language | English |
FEATURES. DESCRIPTION. Dual 18A or Single 36A Output. Input Voltage Range: 4.5V to 18V (after date code. 1720*)
Model Line for this Datasheet
Text Version of Document
LTM4630A Dual 18A or Single 36A DC/DC µModule Regulator
FEATURES DESCRIPTION
n
Dual 18A or Single 36A Output
The LTM®4630A is a dual 18A or single 36A output switch- n
Input Voltage Range: 4.5V to 18V (after date code
ing mode step-down DC/DC µModule® (micromodule)
1720*)
regulator with wider VOUT range and higher efficiency n
Output Voltage Range: 0.6V to 8V (after date code
than LTM4630. Included in the package are the switch-
1720*)
ing controllers, power FETs, inductors and all supporting n components. Operating from an input voltage range of
±1.5% Maximum Total DC Output Error Over Line,
4.5V to 18V, the LTM4630A supports two outputs each
Load and Temperature
n with an output voltage range of 0.6V to 8V, each set by a
Higher Light Load Efficiency and Wider VOUT Range
single external resistor. Its high efficiency design delivers
Than LTM4630
n up to 18A continuous current for each output. Only a few
Differential Remote Sense Amplifier
input and output capacitors are needed. The LTM4630A n
Current Mode Control/Fast Transient Response
is pin compatible with the LTM4620 and LTM4620A (dual n
Multiphase Parallel Current Sharing Up to 144A
13A, single 26A) and the LTM4630 (dual 18A, single 36A). n
Internal Temperature Monitor
n Pin Compatible with the LTM4620A (Dual 13A, The device supports frequency synchronization, multi- phase operation, Burst Mode operation and output voltage Single 26A) and LTM4630 (Dual 18A, Single 36A) n tracking for supply rail sequencing and has an onboard Adjustable Switching Frequency or Synchronization n temperature diode for device temperature monitoring. High Overcurrent Foldback Protection n switching frequency and a current mode architecture enable Selectable Burst Mode® Operation, Pulse Skipping a very fast transient response to line and load changes Mode Operation without sacrificing stability. n Soft-Start/Voltage Tracking n Output Overvoltage Protection Fault protection features include overvoltage and n 16mm × 16mm × 4.41mm LGA and 16mm × 16mm × overcurrent protection. The LTM4630A is offered in 16mm 5.01mm BGA Packages × 16mm × 4.41mm LGA and 16mm × 16mm × 5.01mm BGA packages.
APPLICATIONS
*Maximum VIN = 15V and VOUT = 5.3V with date code before 1720. n Telecom and Networking Equipment All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066 n Storage and ATCA Cards and 6580258. Other patents pending. n Industrial Equipment
TYPICAL APPLICATION 36A, 1.2V Output DC/DC µModule Regulator 1.2VOUT and 3.3VOUT
10k
Efficiency vs IOUT
INTVCC PGOOD 100 4.7µF PGOOD2 INTVCC PGOOD1 VIN 95 VIN VOUT1 VOUT 4.5V TO 15V 22µF + 25V 120k V 100µF 470µF OUTS1 6.3V 6.3V 90 ×4 TEMP DIFFOUT TRACK1 VFB1 85 TRACK2 VFB2 LTM4630A 60.4k 80 0.1µF fSET COMP1 EFFICIENCY (%) COMP2 75k 75 12 V PINS UNUSED IN IN, 1.2VOUT, 300kHz RUN1 VOUT2 + 12 V THIS APPLICATION: 100µF 70 IN, 3.3VOUT, 600kHz RUN2 DIFFP 470µF 5 V CLKOUT 6.3V IN, 1.2VOUT, 300kHz 6.3V 5 V EXTV PHASMD DIFFN IN, 3.3VOUT, 500kHz CC 65 SW1 SGND GND MODE_PLLIN 0 2 4 6 8 10 12 14 16 18 SW2 4630A TA01a LOAD CURRENT (A) VOUTS2 4630A TA01b 4630afb For more information www.linear.com/LTM4630A 1 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Related Parts
FEATURES DESCRIPTION
n
Dual 18A or Single 36A Output
The LTM®4630A is a dual 18A or single 36A output switch- n
Input Voltage Range: 4.5V to 18V (after date code
ing mode step-down DC/DC µModule® (micromodule)
1720*)
regulator with wider VOUT range and higher efficiency n
Output Voltage Range: 0.6V to 8V (after date code
than LTM4630. Included in the package are the switch-
1720*)
ing controllers, power FETs, inductors and all supporting n components. Operating from an input voltage range of
±1.5% Maximum Total DC Output Error Over Line,
4.5V to 18V, the LTM4630A supports two outputs each
Load and Temperature
n with an output voltage range of 0.6V to 8V, each set by a
Higher Light Load Efficiency and Wider VOUT Range
single external resistor. Its high efficiency design delivers
Than LTM4630
n up to 18A continuous current for each output. Only a few
Differential Remote Sense Amplifier
input and output capacitors are needed. The LTM4630A n
Current Mode Control/Fast Transient Response
is pin compatible with the LTM4620 and LTM4620A (dual n
Multiphase Parallel Current Sharing Up to 144A
13A, single 26A) and the LTM4630 (dual 18A, single 36A). n
Internal Temperature Monitor
n Pin Compatible with the LTM4620A (Dual 13A, The device supports frequency synchronization, multi- phase operation, Burst Mode operation and output voltage Single 26A) and LTM4630 (Dual 18A, Single 36A) n tracking for supply rail sequencing and has an onboard Adjustable Switching Frequency or Synchronization n temperature diode for device temperature monitoring. High Overcurrent Foldback Protection n switching frequency and a current mode architecture enable Selectable Burst Mode® Operation, Pulse Skipping a very fast transient response to line and load changes Mode Operation without sacrificing stability. n Soft-Start/Voltage Tracking n Output Overvoltage Protection Fault protection features include overvoltage and n 16mm × 16mm × 4.41mm LGA and 16mm × 16mm × overcurrent protection. The LTM4630A is offered in 16mm 5.01mm BGA Packages × 16mm × 4.41mm LGA and 16mm × 16mm × 5.01mm BGA packages.
APPLICATIONS
*Maximum VIN = 15V and VOUT = 5.3V with date code before 1720. n Telecom and Networking Equipment All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066 n Storage and ATCA Cards and 6580258. Other patents pending. n Industrial Equipment
TYPICAL APPLICATION 36A, 1.2V Output DC/DC µModule Regulator 1.2VOUT and 3.3VOUT
10k
Efficiency vs IOUT
INTVCC PGOOD 100 4.7µF PGOOD2 INTVCC PGOOD1 VIN 95 VIN VOUT1 VOUT 4.5V TO 15V 22µF + 25V 120k V 100µF 470µF OUTS1 6.3V 6.3V 90 ×4 TEMP DIFFOUT TRACK1 VFB1 85 TRACK2 VFB2 LTM4630A 60.4k 80 0.1µF fSET COMP1 EFFICIENCY (%) COMP2 75k 75 12 V PINS UNUSED IN IN, 1.2VOUT, 300kHz RUN1 VOUT2 + 12 V THIS APPLICATION: 100µF 70 IN, 3.3VOUT, 600kHz RUN2 DIFFP 470µF 5 V CLKOUT 6.3V IN, 1.2VOUT, 300kHz 6.3V 5 V EXTV PHASMD DIFFN IN, 3.3VOUT, 500kHz CC 65 SW1 SGND GND MODE_PLLIN 0 2 4 6 8 10 12 14 16 18 SW2 4630A TA01a LOAD CURRENT (A) VOUTS2 4630A TA01b 4630afb For more information www.linear.com/LTM4630A 1 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Operation Applications Information Related Parts
