MCP1726

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, 3.3V, 5.0V
• Low Dropout Voltage: 220 mV Typical at 1A
• Typical Output Voltage Tolerance: 0.4%
• Stable with 1.0 µF Ceramic Output Capacitor
• Fast response to Load Transients
• Low Supply Current: 140 µA (typ)
• Low Shutdown Supply Current: 0.1 µA (typ)
• Adjustable Delay on Power Good Output
• Short Circuit Current Limiting and Overtemperature Protection
• 3X3 DFN-8 and SOIC-8 Package Options




Application

• High-Speed Driver Chipset Power
• Networking Backplane Cards
• Notebook Computers
• Network Interface Cards
• Palmtop Computers
• 2.5V to 1.XV Regulators




Pinout






Specifications

Parameter NameValueMax Input Voltage6Output Voltage (v)0.8, 1.2, 1.8, 2.5, 3.3, 5.0Typical Active Current (A)130Typical Dropout Voltage @ Max. lout (mV)500Typical Output Voltage Accuracy (%)0.5Output Capacitor TypeCeramic/Aluminum/Tantalum

Parameter Name	Value
Max Input Voltage	6
Output Voltage (v)	0.8, 1.2, 1.8, 2.5, 3.3, 5.0
Typical Active Current (A)	130
Typical Dropout Voltage @ Max. lout (mV)	500
Typical Output Voltage Accuracy (%)	0.5
Output Capacitor Type	Ceramic/Aluminum/Tantalum

V_IN..................................................................................6.5V
Maximum Voltage on Any Pin .. (GND 0.3V) to (V_DD + 0.3)V
Maximum Junction Temperature, TJ ...........................+150°C
Maximum Power Dissipation......... Internally-Limited (Note 6)
Storage temperature ..................................-65°C to +150°C





Description

The MCP1726 is a 1A, ceramic output cap stable, low output voltage Low Dropout Regulator (LDO) with shutdown and user-programmable delay power good functions. It is the ONLY 1A LDO on the market that incorporates shutdown, power good, and programmable power good delay features on a single device.

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 a fixed (or adjustable) output voltage version, with an output voltage range of 0.8V to 5.0V. The 1A output current capability, combined with the 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 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 of MCP1726 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.