MIC2875 Datasheet, PDF (1/24 Pages) Microchip Technology – 4.8A ISW, Synchronous Boost Regulator with Bi-Directional Load Disconnect

MIC2875
4.8A I_SW, Synchronous Boost Regulator
with Bi-Directional Load Disconnect
Features
• Up to 95% Efficiency
• Input Voltage Range: 2.5V to 5.5V
• Fully-Integrated, High-Efficiency, 2 MHz
Synchronous Boost Regulator
• Bi-Directional True Load Disconnect
• Integrated Anti-Ringing Switch
• Minimum Switching Frequency of 45 kHz
• <1 μA Shutdown Current
• Bypass Mode for V_IN ≥ V_OUT
• Overcurrent Protection and Thermal Shutdown
• Fixed and Adjustable Output Versions
• 8-pin 2 mm × 2 mm TDFN Package
Applications
• Tablet and Smartphones
• USB OTG and HDMI Hosts
• Portable Power Reserve Supplies
• Low-Noise Audio Applications
• Portable Equipment
Package Type
MIC2875 (FIXED OUTPUT)
8-Pin 2x2 TDFN* (MT)
(Top View)
General Description
The MIC2875 is a compact and highly-efficient 2 MHz
synchronous boost regulator with a 4.8A switch. It
features a bi-directional load disconnect function which
prevents any leakage current between the input and
output when the device is disabled. The MIC2875
operates in bypass mode automatically when the input
voltage is greater than the target output voltage. At light
loads, the boost converter goes to the PFM mode to
improve the efficiency.
To minimize switching artifacts in the audio band, the
MIC2875 is designed to operate with a minimum
switching frequency of 45 kHz. The MIC2875 also
features an integrated anti-ringing switch to minimize
EMI.
The MIC2875 is available in a 8-pin 2 mm × 2 mm Thin
DFN (TDFN) package, with a junction temperature
range of –40°C to +125°C.
MIC2875 (ADJ. OUTPUT)
8-Pin 2x2 TDFN* (MT)
(Top View)
SW 1 ▲
PGND 2
EP
IN ³
AGND 4
8 OUT
7 ^/PG
6 ^EN
5 OUTS
SW 1 ▲
PGND 2
EP
IN ³
AGND 4
8 OUT
7 ^/PG
6 ^EN
5 FB
* Includes exposed thermal pad (EP), see Table 3-1.
 2015 Microchip Technology Inc.
DS20005549A-page 1