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Maxim > Solutions > MP3 Docking Stations: Mid Level

Power Management

DATA SHEETS
Display Title / Parts Key Advantages
QV  PDF 1.5A Dual-Input, USB/AC Adapter Charger and Smart Power Selector
MAX8677A

Optimized Smart Power control maximizes charger rate from USB/AC-adapter power while supporting system load
QV  PDF Loose Cell NiMH Chargers
DS2711, DS2712

NiMH Battery Charger Detects and Avoids Charging Alkaline Cells
QV  PDF Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFN
MAX1589

500mA LDO Operates with 1.62V (min) Input Voltage
QV  PDF Low-Noise, 14V Input, 1A, PWM Step-Down Converters
MAX1684, MAX1685

14V Input, 1A Step-Down DC-DC Converter Provides Up to 96% Efficiency



Key Specifications:   Battery Chargers
Part Number Cell Chemistry Number of NiMH or NiCd cells Number of Lithium-Ion cells Protected VIN (max) (V) Charging VIN (max) (V) Internal FET/Transistor Charger (V) Charge Rate Set by Max. Charge Current (A) Charge Termination Secondary Charge Termination Charge Regulation Features EV-Kit Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
MAX8677A  Li-Ion
Li-Polymer 		 -  1 16 6.6 Yes 4.2 Logic Input
Resistor 		1.5 Min. Charge Current Timer Linear
•Dual USB/Adapter Input
•Smart Power Selector
•Stand Alone
•Thermal Die Regulation
•Thermistor Input
•Timer
•USB Input
 Yes THIN QFN/24 17 -40 to +85
DS2712  NiCd
NiMH 		1
2 		 -  5.5 5.5 No  -  Resistor  -  -ΔV Max. Temp.
Max. V
Timer 		Switchmode
•Stand Alone
•Thermistor Input
•Timer
 Yes SOIC/16
TSSOP/16 		33 -20 to +70
DS2711  NiCd
NiMH 		1
2 		 -  5.5 5.5 No  -  Resistor  -  -ΔV Max. Temp.
Max. V
Timer 		Linear
•Stand Alone
•Thermistor Input
•Timer
 Yes SOIC/16
TSSOP/16 		33 -20 to +70
See All Battery Chargers (60)

Key Specifications:   Linear Regulators
Part Number Regulators per Pkg. Min. VIN (V) Max. VIN (V) Preset VOUT (V) Typ. VDROPOUT@ Rated ILOAD (V) Rated ILOAD (mA) Max. ICC (µA) Low Battery/ Power Fail Output POK/ Reset Output POK/ Reset Output Type Nominal POK/Reset Threshold (V) Min. Reset Pulse Width (ms) Watchdog Reverse Battery Protection Package Smallest Available Package (max w/pins) (mm2) Operating Temp. Range (°C)
MAX1589  1 1.62 3.6 0.75
1.0
1.3
1.5
1.8
2.5
3.0 		0.175 500 140 No Reset Open Drain Active Low Vout-17.5% 70 No No SOT-23/6
THIN QFN (Dual)/6 		8 -40 to +85
See All Linear Regulators (138)

Key Specifications:   Switch-Mode DC-DC Power Supplies
Part Number Topology VIN (min) (V) VIN (max) (V) Number of DC-DC Outputs Preset VOUT (V) Digital/VID Programmed Output Min. Adjustable VOUT (V) Max. Adjustable VOUT (V) IOUT (A) Operating Current, ICC (max) (mA) Fixed Freq/PWM Operation Operating Freq. (kHz) Internal Power Switch(es) Synchronous Rectifier Package Smallest Available Package (max w/pins) (mm2)
MAX1684  Step-Down 2.7 14 1 3.3 No 1.25 14 1 0.61 Yes 300 Yes No QSOP/16 31
MAX1685  Step-Down 2.7 14 1 3.3 No 1.25 14 1 0.61 Yes 600 Yes No QSOP/16 31
See All Switch-Mode DC-DC Power Supplies (418)


         


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