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Maxim > Solutions > Rechargeable Hearing Aid

Power Supply

DATA SHEETS
Display Title / Parts Key Advantages
QV  PDF Evaluation Kit for the MAX8902A and MAX8902B
MAX8902EVKIT
QV  PDF PMIC with Integrated Charger and Smart Power Selector for Handheld Devices
MAX8671X

Five Regulated Output Voltages and Li+ Charger with Smart Power Control that Allows a System to Operate Without a Battery
QV  PDF Low-Noise 500mA LDO Regulators in a 2mm x 2mm TDFN Package
MAX8902A, MAX8902B

Low-Noise, Low-Dropout, High-PSRR, 500mA Linear Regulators in a 2mm x 2mm TDFN Package
QV  PDF 16µA IQ, 1.2A PWM Step-Down DC-DC Converters
MAX1556, MAX1556A, MAX1557

16µA Quiescent Current, 1.2A and 600mA, Step-Down Converters are 95% Efficient at 1mA
QV  PDF Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFN
MAX1589
QV  PDF 500mA, Low-Dropout Linear Regulator in µMAX
MAX1792

0.5A LDO Has Only 130mV Dropout Voltage, Fits in 1.3W Power µMAX Package



Key Specifications:   Battery Chargers
Part Number Cell Chemistry Number of Lithium-Ion cells Protected VIN (max) (V) Charging VIN (max) (V) Charge Rate Set by Max. Charge Current (A) Max. Charge Current (A) Charge Termination Charge Regulation Features EV-Kit Package Operating Temp. Range (°C)
MAX8671X  Li-Ion
Li-Polymer 		1 14 6.6 Logic Input
Resistor 		1 1 Min. Charge Current Linear
•Dual USB/Adapter Input
•Input Current Limit
•Internal FET/Transistor
•Smart Power Selector
•Stand Alone
•Thermal Die Regulation
•Thermistor Input
•Timer
•USB Input
 Yes THIN QFN/40 -40 to +85
See All Battery Chargers (60)

Key Specifications:   Linear Regulators
Part Number Regulators per Pkg. Min. VIN (V) Max. VIN (V) Preset VOUT (V) Min. Adjustable VOUT (V) Max. Adjustable VOUT (V) Typ. VDROPOUT@ Rated ILOAD (V) Rated ILOAD (mA) Max. ICC (µA) Low Battery/ Power Fail Output Nominal POK/Reset Threshold (V) Watchdog Reverse Battery Protection Package Operating Temp. Range (°C)
MAX8902  1 1.7 5.5 1.5
1.8
2.0
2.5
3.0
3.1
3.3 		0.6 5.3 0.05 500 120 No Vout-9% No No THIN QFN (Dual)/8 -40 to +125
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 Vout-17.5% No No SOT-23/6
THIN QFN (Dual)/6 		-40 to +85
MAX1792  1 2.5 5.5 1.5
1.8
2.5
3.3
5.0 		1.25 5 0.13 500 250 No  -  No No uMAX/8 -40 to +85
See All Linear Regulators (141)

Key Specifications:   Multifunction PMICs
Part Number Primary Topology Monitor/Control Features DC-DC/Power Features Battery Charger Features VIN (min) (V) VIN (max) (V) Min. VOUT (V) Max. VOUT (V) IOUT (A) IOUT (A) Operating Freq. (kHz) Package
MAX8671X  Step-Down Low Batt./POK Output Current Limit
Fixed Freq./PWM
Internal Pwr. FETs
Soft Start
Sync. Rectifier 		Battery Charger
Charge Timer
Dual USB/ Adapter Input
Input Current Limit
Smart Pwr. Selector
Thermal Die Regulation
Thermistor Input
USB Input 		2.6 6.6 0.6 5 0.5 0.5 2000 THIN QFN/40
See All Multifunction PMICs (77)

Key Specifications:   Step-Down Switching Regulators
Part Number VIN (min) (V) VIN (max) (V) Min. VOUT (V) Max. VOUT (V) Preset VOUT (V) IOUT (A) IOUT (A) Output Adj. Method Operating Current, ICC (max) (mA) Number of DC-DC Outputs Operating Freq. (kHz) Package
MAX1556  2.6 5.5 0.75 5.5 1.8
2.5
3.3 		1.2 1.2 Preset
Resistor 		0.016 1 1000 THIN QFN (Dual)/10
MAX1557  2.6 5.5 0.75 5.5 1.3
1.5 		0.6 0.6 Preset
Resistor 		0.016 1 1000 THIN QFN (Dual)/10
See All Step-Down Switching Regulators (228)


         


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