MCP1827

Features:

• 1.5A Output Current Capability
• Input Operating Voltage Range: 2.3V to 6.0V
• Adjustable Output Voltage Range: 0.8V to 5.0V (MCP1827 only)
• Standard Fixed Output Voltages: - 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
• Other Fixed Output Voltage Options Available Upon Request
• Low Dropout Voltage: 330 mV Typical at 1.5A
• Typical Output Voltage Tolerance: 0.5%
• Stable with 1.0 F Ceramic Output Capacitor
• Fast response to Load Transients
• Low Supply Current: 120 A (typ)
• Low Shutdown Supply Current: 0.1 A (typ) (MCP1827 only)
• Fixed Delay on Power Good Output (MCP1827 only)
• Short Circuit Current Limiting and Overtemperature Protection
• 5-Lead Plastic DDPAK, 5-Lead TO-220 Package Options (MCP1827)
• 3-Lead Plastic DDPAK, 3-Lead TO-220 Package Options (MCP1827S)




Application

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




Specifications

Parameter NameValueMax Input Voltage6Output Voltage (v)0.8,1.2,1.8, 2.5,3.0, 3.3, 5.0Typical Active Current (A)120Typical Dropout Voltage @ Max. lout (mV)330Typical 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, 2.5,3.0, 3.3, 5.0
Typical Active Current (A)	120
Typical Dropout Voltage @ Max. lout (mV)	330
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 Power Dissipation......... Internally-Limited (Note 6)
Output Short Circuit Duration................................Continuous
Storage temperature .....................................-65°C to +150°C
Maximum Junction Temperature, TJ ...........................+150°C
ESD protection on all pins (HBM/MM) ........... 2 kV; 200V


† Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Description

The MCP1827 is a 1.5A, ceramic output cap stable, low output voltage, Low Dropout Regulator (LDO) with shutdown and power good functions (fixed output version only). It is a feature-rich and thermally enhanced 1.5A LDO in DDPAK-5 and TO-220-5 packages.

The MCP1827/MCP1827S is a 1.5A Low Dropout (LDO) linear regulator that provides high current and low output voltages. The MCP1827 comes in a fixed or adjustable output voltage version, with an output voltage range of 0.8V to 5.0V. The 1.5A output current capability, combined with the low output voltage capability, make the MCP1827 a good choice for new sub-1.8V output voltage LDO applications that have high current demands. The MCP1827S is a 3-pin fixed voltage version. The MCP1827/MCP1827S is based upon the MCP1727 LDO device.

The MCP1827/MCP1827S 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 F of output capacitance is needed to stabilize the LDO.

Using CMOS construction, the quiescent current consumed by the MCP1827/MCP1827S is typically less than 120 A over the entire input voltage range, making it attractive for portable computing applications that demand high output current. The MCP1827 versions have a Shutdown (SHDN) pin. When shut down, the quiescent current is reduced to less than 0.1 A.

On the MCP1827 fixed output versions 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). The PWRGD delay is internally fixed at 200 s (typical). The overtemperature and short circuit current-limiting provide additional protection for the LDO during system fault conditions.