MAX8663：Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices

7-Channel Integrated PMICs Include Charger with Smart Power Control and Allow the System to Operate Without a Battery

The MAX8662/MAX8663 power-management ICs (PMICs) are efficient, compact devices suitable for smart cellular phones, PDAs, Internet appliances, and other portable devices. They integrate two synchronous buck regulators, a boost regulator driving two to seven white LEDs, four low-dropout linear regulators (LDOs), and a linear charger for a single-cell Li-ion (Li+) battery. Maxim's Smart Power Selector™ (SPS) safely distributes power between an external power source (AC adapter, auto adapter, or USB source), battery, and the system load. When system load peaks exceed the external source capability, the battery supplies supplemental current. When system load requirements are small, residual power from the external power source charges the battery. A thermal-limiting circuit limits battery-charge rate and external power-source current to prevent overheating. The PMIC also allows the system to operate with no battery or a discharged battery. The MAX8662 is available in a 6mm x 6mm, 48-pin TQFN package, while the MAX8663, without the LED driver, is available in a 5mm x 5mm, 40-pin TQFN package.

Key Features

Two 95%-Efficient 1MHz Buck Regulators
- Main Regulator: 0.98V to VIN at 1200mA
- Core Regulator: 0.98V to VIN at 900mA
1MHz Boost WLED Driver
- Drives Up to 7 White LEDs at 30mA (max)
- PWM and Analog Dimming Control
Four Low-Dropout Linear Regulators
- 1.7V to 5.5V Input Range
- 15µA Quiescent Current
Single-Cell Li+ Charger
- Adapter or USB Input
- Thermal-Overload Protection
Smart Power Selector (SPS)
- AC Adapter/USB or Battery Source
- Charger-Current and System-Load Sharing

MAX8662, MAX8663: Typical Operating Circuit

Applications/Uses

3G Smart cellular phones
Other Handheld Devices
PDAs, portable media players (PMPs)
Portable GPS Navigation Devices (PNDs)

DataSheet

title	Download file
MAX8662-MAX8663 Data Sheet	MAX8662-MAX8663.pdf

Parametrics

Part Number	Primary Topology	Monitor/Control Features	DC-DC/Power Features	LCD/LED/Flash/CCD Features	Battery Charger Features	Interface Type	V_IN (V)	V_IN (V)	V_OUT (V)	V_OUT (V)	Max. I_OUT (A)	Max. I_OUT (A)	Oper. Freq. (kHz)	Package/Pins	Budgetary Price
Part Number	Primary Topology	Monitor/Control Features	DC-DC/Power Features	LCD/LED/Flash/CCD Features	Battery Charger Features	Interface Type	min	max	min	max	Max. I_OUT (A)	Max. I_OUT (A)	Oper. Freq. (kHz)	Package/Pins	See Notes
MAX8662	Step-Down	Low Batt./POK Output Shutdown	Current Limit Fixed Freq./PWM Internal Switch Soft Start Sync. Rectifier	White LED	Battery Charger Charge Timer Input Current Limit Smart Pwr. Selector Thermal Die Regulation Thermistor Input USB Input	GPIO	2.6	8	1	3.3	1.2	1.2	1000	TQFN/48	$4.57 @1k
MAX8663	Step-Down	Low Batt./POK Output Shutdown		-		GPIO	2.6	8	1	3.3	1.2	1.2	1000	TQFN/40	$4.25 @1k