MCP1623 Microchip Technology, MCP1623 Datasheet
MCP1623
Manufacturer Part Number
MCP1623
Description
Low-Voltage Input Boost Regulator
Manufacturer
Microchip Technology
Datasheet
1.MCP1623.pdf
(26 pages)
Available stocks
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Company:
Part Number:
MCP1623-I/MC
Manufacturer:
MICROCHIP
Quantity:
12 000
Company:
Part Number:
MCP1623T-I/MC
Manufacturer:
MICROCHIP
Quantity:
12 000
Features
• Up to 96% Typical Efficiency
• 425 mA Typical Peak Input Current Limit:
• Low Start-up Voltage: 0.65V, typical 3.3V V
• Low Operating Input Voltage: 0.35V, typical
• Adjustable Output Voltage Range: 2.0V to 5.5V
• Maximum Input Voltage V
• Automatic PFM/PWM Operation (MCP1624)
• PWM-only Operation (MCP1623)
• 500 kHz PWM Frequency
• Low Device Quiescent Current: 19 µA, typical
• Internal Synchronous Rectifier
• Internal Compensation
• Inrush Current Limiting and Internal Soft-Start
• True Load Disconnect
• Shutdown Current (All States): < 1 µA
• Low Noise, Anti-Ringing Control
• Overtemperature Protection
• SOT-23-6 Package
Applications
• One, Two and Three Cell Alkaline and NiMH/NiCd
2010 Microchip Technology Inc.
- I
- I
- I
@ 1 mA
3.3V
PFM mode
Low-Power PIC
OUT
OUT
OUT
OUT
> 50 mA @ 1.2V V
> 175 mA @ 2.4V V
> 175 mA @ 3.3V V
@ 1 mA
®
Microcontroller Applications
Low-Voltage Input Boost Regulator
IN
IN
IN,
OUT
, 3.3V V
, 3.3V V
5.0V V
for PIC
< 5.5V
OUT
OUT
OUT
OUT
®
Microcontrollers
General Description
The MCP1623/24 is a compact, high-efficiency, fixed
frequency, synchronous step-up DC-DC converter. It
provides an easy-to-use power supply solution for PIC
microcontroller applications powered by either one-cell,
two-cell, or three-cell alkaline, NiCd, NiMH, one-cell
Li-Ion or Li-Polymer batteries.
Low-voltage technology allows the regulator to start up
without high inrush current or output voltage overshoot
from a low 0.65V input. High efficiency is accomplished by
integrating the low resistance N-Channel Boost switch
and synchronous P-Channel switch. All compensation
and protection circuitry are integrated to minimize external
components. For standby applications, the MCP1624
operates and consumes only 19 µA while operating at no
load. The MCP1623 device option is available that
operates in PWM-only mode.
A “true” load disconnect mode provides input to output
isolation while disabled (EN = GND) by removing the
normal boost regulator diode path from input to output.
This mode consumes less than 1 µA of input current.
Output voltage is set by a small external resistor
divider.
Packaging
MCP1623/24
GND
SW
EN
6-Lead SOT-23
1
2
3
MCP1623/24
6 V
5 V
4
V
IN
OUT
FB
www.DataSheet4U.com
DS41420A-page 1
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