MCP1826/MCP1826S
1000 mA, Low-Voltage, Low Quiescent Current
LDO Regulator
Features: Description:
1000 mA Output Current Capability The MCP1826/MCP1826S is a 1000 mA Low Dropout
(LDO) linear regulator that provides high-current and
Input Operating Voltage Range: 2.3V to 6.0V
low-output voltages. The MCP1826 comes in a fixed or
Adjustable Output Voltage Range: 0.8V to 5.0V
adjustable output voltage version, with an output
(MCP1826 only)
voltage range of 0.8V to 5.0V. The 1000 mA output cur-
Standard Fixed Output Voltages:
rent capability, combined with the low-output voltage
- 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
capability, make the MCP1826 a good choice for new
Other Fixed Output Voltage Options Available
sub-1.8V output voltage LDO applications that have
Upon Request
high current demands. The MCP1826S is a 3-pin fixed
voltage version.
Low Dropout Voltage: 250 mV Typical at 1000 mA
Typical Output Voltage Tolerance: 0.5%
The MCP1826/MCP1826S is stable using ceramic
output capacitors that inherently provide lower output
Stable with 1.0 F Ceramic Output Capacitor
noise and reduce the size and cost of the entire
Fast Response to Load Transients
regulator solution. Only 1 F of output capacitance is
Low Supply Current: 120 A (typ)
needed to stabilize the LDO.
Low Shutdown Supply Current: 0.1 A (typ)
Using CMOS construction, the quiescent current
(MCP1826 only)
consumed by the MCP1826/MCP1826S is typically
Fixed Delay on Power Good Output
less than 120 A over the entire input voltage range,
(MCP1826 only)
making it attractive for portable computing applications
Short Circuit Current Limiting and
that demand high-output current. The MCP1826
Overtemperature Protection
versions have a Shutdown (SHDN) pin. When shut
TO-263-5 (DDPAK-5), TO-220-5, SOT-223-5
down, the quiescent current is reduced to less than
Package Options (MCP1826).
0.1 A.
TO-263-3 (DDPAK-3), TO-220-3, SOT-223-3
On the MCP1826 fixed output versions the scaled-
Package Options (MCP1826S).
down output voltage is internally monitored and a
power good (PWRGD) output is provided when the
Applications:
output is within 92% of regulation (typical). The
PWRGD delay is internally fixed at 200 s (typical).
High-Speed Driver Chipset Power
The overtemperature and short circuit current-limiting
Networking Backplane Cards
provide additional protection for the LDO during system
Notebook Computers
Fault conditions.
Network Interface Cards
Palmtop Computers
2007-2013 Microchip Technology Inc. DS22057B-page 1MCP1826/MCP1826S
Package Types
MCP1826 MCP1826S
DDPAK-5 TO-220-5 DDPAK-3 TO-220-3
Fixed/Adjustable
12 3
12 3
12 3 4 5
1234 5
SOT-223-5 SOT-223-3
6 4
12 4 1 2 3
3 5
Pin Fixed Adjustable Pin
1V
1 SHDN SHDN IN
2 GND (TAB)
2V V
IN IN
3V
OUT
3 GND (TAB) GND (TAB)
4 GND (TAB)
4V V
OUT OUT
5 PWRGD ADJ
6 GND (TAB) GND (TAB)
DS22057B-page 2 2007-2013 Microchip Technology Inc.