MIC45404 Datasheet, PDF (1/32 Pages) Microchip Technology – 19V 5A Ultra-Low Profile DC-to-DC Power Module

MIC45404
19V 5A Ultra-Low Profile DC-to-DC Power Module
Features
• Input Voltage Range: 4.5V to 19V
• Output Current: Up to 5A
• 82% Peak Efficiency at 12 V_IN, 0.9 V_OUT
• Pin-Selectable Output Voltages: 0.7V, 0.8V, 0.9V,
1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V
• ±1% Output Voltage Accuracy
• Supports Safe Pre-Biased Start-up
• Pin-Selectable Current Limit
• Pin-Selectable Switching Frequency
• Internal Soft Start
• Thermal Shutdown
• Hiccup Mode Short-Circuit Protection
• Available in a 54-Lead 6 mm x 10 mm QFN
Package
• Ultra-Low Profile: 2.0 mm Height
• -40°C to +125°C Junction Temperature Range
Applications
• Servers, Data Storage, Routers and Base Stations
• FPGAs, DSP and Low-Voltage ASIC Power
General Description
The MIC45404 device is an ultra-low profile, synchro-
nous step-down regulator module, featuring a unique
2.0 mm height. The module incorporates a DC-to-DC
regulator, bootstrap capacitor, high-frequency input
capacitor and an inductor in a single package. The
module pinout is optimized to simplify the Printed
Circuit Board (PCB) layout process.
This highly integrated solution expedites system
design and improves product time to market. The inter-
nal MOSFETs and inductor are optimized to achieve
high efficiency at low output voltage. Due to the fully
optimized design, MIC45404 can deliver up to 5A
current with a wide input voltage range of 4.5V to 19V.
The MIC45404 is available in a 54-lead 6 mm x
10 mm x 2.0 mm QFN package with a junction operat-
ing temperature range from -40C to +125C, which
makes an excellent solution for systems in which PCB
real-estate and height are important limiting factors,
and air flow is restricted.
Typical Application
V_DDA
V_IN
4.5V to 19V
V_DDA
Frequency
Selection
V_DDA
Current Limit
Selection
Power-Good
Enable
V_IN
V_DDA
GND
GND
OUT
OUTSNS
COMP
FREQ
MIC45404
VOSET1
I_LIM
PG
VOSET0
EN/DLY
V_OUT
V_DDA
Output
Voltage
V_DDA Selection
MIC45404 12V 5A DC-to-DC Converter
 2015 Microchip Technology Inc.
DS20005478A-page 1