MCP1726_14 Datasheet, PDF (1/32 Pages) Microchip Technology – 1A, Low-Voltage, Low Quiescent Current LDO Regulator

MCP1726
1A, Low-Voltage, Low Quiescent Current LDO Regulator
Features:
• 1A Output Current Capability
• Input Operating Voltage Range: 2.3V to 6.0V
• Adjustable Output Voltage Range: 0.8V to 5.0V
• Standard Fixed Output Voltages:
- 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
• Low Dropout Voltage: 220 mV typical at 1A
• Typical Output Voltage Tolerance: ±0.5%
• Stable with 1.0 µF Ceramic Output Capacitor
• Fast Response to Load Transients
• Low Supply Current: 140 µA (typical)
• Low Shutdown Supply Current: 0.1 µA (typical)
• Adjustable Delay on Power Good Output
• Short-Circuit Current Limiting and
Overtemperature Protection
• 3x3 DFN-8 and SOIC-8 Package Options
Applications:
• High-Speed Driver Chipset Power
• Networking Backplane Cards
• Notebook Computers
• Network Interface Cards
• Palmtop Computers
• 2.5V to 1.XV Regulators
Package Types
Description:
The MCP1726 is a 1A Low Dropout (LDO) linear
regulator that provides high current and low output
voltages in a very small package. The MCP1726
comes in fixed or adjustable output voltage versions,
with an output voltage range of 0.8V to 5.0V. The 1A
output current capability and low output voltage
capability make the MCP1726 a good choice for new
sub-1.8V output voltage LDO applications that have
high current demands.
The MCP1726 is stable using ceramic output
capacitors that inherently provide lower output noise
and reduce the size and cost of the entire regulator
solution. Only 1 µF of output capacitance is needed to
stabilize the LDO.
Using CMOS construction, the quiescent current
consumed by the MCP1726 is typically less than
140 µA over the entire input voltage range, making it
attractive for portable computing applications that
demand high output current. When the MCP1726 is
shut down, the quiescent current is reduced to less
than 0.1 µA.
The scaled-down output voltage is internally monitored
and a Power Good (PWRGD) output is provided when
the output is within 92% of regulation (typical). An
external capacitor can be used on the C_DELAY pin to
adjust the delay from 1 ms to 300 ms.
The overtemperature and short-circuit current limiting
provide additional protection for the LDO during system
fault conditions.
MCP1726-ADJ
SOIC
MCP1726-xx
SOIC
MCP1726-ADJ
3x3 DFN
MCP1726-xx
3x3 DFN
V_IN 1
8 V_OUT
V_IN 1
8 V_OUT
V_IN 1
8 V_OUT
V_IN 1
8 V_OUT
V_IN 2
SHDN 3
GND 4
7 ADJ
V_IN 2
6 C_DELAY SHDN ³
5 PWRGD GND ⁴
7 V_OUT
V_IN 2 _EP 7 ADJ
V_IN 2 _EP 7 V_OUT
6 C_{DELAY SHDN 3}
9
6 C_DELAY SHDN 3
9
6 C_DELAY
5 PWRGD _{GND 4}
5 PWRGD GND 4
5 PWRGD
 2005-2014 Microchip Technology Inc.
DS20001936D-page 1