MAX1819：500mA Low-Dropout Linear Regulator in UCSP _ BDTIC a Leading Distributor in China

MAX1819：500mA Low-Dropout Linear Regulator in UCSP

The MAX1819 low-dropout linear regulator operates from a 2.5V to 5.5V supply and delivers a guaranteed 500mA load current with low 120mV dropout. The high-accuracy (±1%) output voltage is preset at an internally trimmed voltage (see the Selector Guide in the full data sheet) or can be adjusted from 1.25V to 5V with an external resistive-divider. An internal PMOS pass transistor allows the low 125µA supply current to remain independent of load, making this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations, and notebook computers. Other features include an active-low, open-drain reset output that indicates when the output is out of regulation, a 0.1µA shutdown, short-circuit protection, and thermal shutdown protection. The device is available in a miniature 6-pin UCSP™ package.

Key Features

Guaranteed 500mA Output Current
Low 90mV Dropout at 500mA
±1% Initial Output Accuracy
Preset Output at 1.5V, 1.8V, 2V, 2.5V, 3.3V, 5V
Adjustable Output from 1.25V to 5V
Power-OK Output
Low 125µA Ground Current
0.1µA Shutdown Current
Thermal Overload Protection
Output Current Limit
Tiny 840mW 6-Pin UCSP Package

MAX1819: Typical Operating Circuit

Applications/Uses

Base Stations
Cellular and Cordless Telephones
Docking Stations
Notebook Computers
Palmtop Computers
Personal Digital Assistants (PDAs)
USB Hubs

DataSheet

title	Download file
MAX1819 Data Sheet	MAX1819.pdf

Parametrics

Part Number	Regulators	V_IN (V)	V_IN (V)	Preset V_OUT (V)	Adj. V_OUT (V)	Adj. V_OUT (V)	V_DROPOUT @Rated I_LOAD (V)	Rated I_LOAD (mA)	Rated I_LOAD (mA)	I_CC (µA)	Output Voltage Noise (µV RMS)	Ref. Bypass	Low Batt./ Pwr. Fail Out	POK/Reset Thresh. (V)	Watchdog	Reverse Batt. Protect.	Oper. Temp. (°C)	Package/Pins
Part Number	Regulators	min	max	Preset V_OUT (V)	min	max	typ	Rated I_LOAD (mA)	Rated I_LOAD (mA)	max	typ	Ref. Bypass	Low Batt./ Pwr. Fail Out	nom	Watchdog	Reverse Batt. Protect.	Oper. Temp. (°C)	Package/Pins
MAX1819	1	2.5	5.5	1.5 1.8 2 2.5 3.3 5	1.25	5	0.125	500	500	250	115	No	No	Vout-7%	No	No	-40 to +85	UCSP/9

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX1819EBL18-T	No Longer Available	MAX1819EBL18+T	UCSP,;9 pin;2.5 mm²	-40°C to +85°C	No
MAX1819EBL25+T	Active		UCSP,;9 pin;2.5 mm²	-40°C to +85°C	Lead Free
MAX1819EBL50-T	No Longer Available	MAX1819EBL50+T	UCSP,;9 pin;2.5 mm²	-40°C to +85°C	No

MAX1819.pdf MAX1819

典型工作电路 MAX1819