Purchase MAX8508, In-stock MAX8508 From SeekIC.
Part Number: MAX8508
Description: The MAX8506/MAX8507/MAX8508 integrate a PWM stepdown DC-DC regulator and a 75mΩ (typ) bypass FET...
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MAX8508
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DataSheet
General Description
MAX8508 General Description
The MAX8506/MAX8507/MAX8508 integrate a PWM stepdown DC-DC regulator and a 75mΩ (typ) bypass FET to power the PA in WCDMA and cdmaOne™ cell phones.
The supply voltage range is from 2.6V to 5.5V, and the guaranteed output current is 600mA. One megahertz PWM switching allows for small external components. The MAX8506 and MAX8507 are dynamically controlled to provide varying output voltages from 0.4V to 3.4V. The MAX8508 is externally programmed for fixed 0.75V to 3.4V output. Digital logic enables a high-power (HP) bypass mode that connects the output directly to the battery for all versions. The MAX8506/MAX8507/MAX8508 are designed so the output settles in less than 30µs for a full-scale change in output voltage and load current.
The MAX8506/MAX8507/MAX8508 are offered in 16-pin 4mm x 4mm thin QFN packages (0.8mm max height).
MAX8508 Maximum Ratings
BATTP, BATT, OUT, SHDN, SKIP, HP, REFIN,
FB to GND ...........................................................-0.3V to +6V
PGND to GND ...................................................-0.3V to +0.3V
BATT to BATTP..................................................-0.3V to +0.3V
OUT, COMP, REF to GND.....................-0.3V to (VBATT + 0.3V)
LX Current (Note 1) ........................................................1.6A
OUT Current (Note 1).......................................................3.2A
Output Short-Circuit Duration............................... Continuous
Continuous Power Dissipation (TA = +70°C)
16-Pin Thin QFN (derate 16.9mW/°C above +70°C) .1.349W
Operating Temperature Range .....................-40°C to +85°C
Junction Temperature..................................................+150°C
Storage Temperature Range .......................-65°C to +150°C
Lead Temperature (soldering, 10s) .............................+300°C
Note 1: LX has internal clamp diodes to PGND and BATT. Applications that forward bias these diodes should take care not to exceed the IC's package power-dissipation limits.
FB to GND ...........................................................-0.3V to +6V
PGND to GND ...................................................-0.3V to +0.3V
BATT to BATTP..................................................-0.3V to +0.3V
OUT, COMP, REF to GND.....................-0.3V to (VBATT + 0.3V)
LX Current (Note 1) ........................................................1.6A
OUT Current (Note 1).......................................................3.2A
Output Short-Circuit Duration............................... Continuous
Continuous Power Dissipation (TA = +70°C)
16-Pin Thin QFN (derate 16.9mW/°C above +70°C) .1.349W
Operating Temperature Range .....................-40°C to +85°C
Junction Temperature..................................................+150°C
Storage Temperature Range .......................-65°C to +150°C
Lead Temperature (soldering, 10s) .............................+300°C
Note 1: LX has internal clamp diodes to PGND and BATT. Applications that forward bias these diodes should take care not to exceed the IC's package power-dissipation limits.
MAX8508 Features
· Integrated 75mΩ (typ) Bypass FET
· 38mV Dropout at 600mA Load
· Up to 94% Efficiency
· Dynamically Adjustable Output from 0.4V to 3.4V (MAX8506, MAX8507)
· Externally Fixed Output from 0.75V to 3.4V (MAX8508)
· 1MHz Fixed-Frequency PWM Switching
· 600mA Guaranteed Output Current
· Shutdown Mode 0.1µA (typ)
· 16-Pin Thin QFN (4mm x 4mm, 0.8mm max Height)
· 38mV Dropout at 600mA Load
· Up to 94% Efficiency
· Dynamically Adjustable Output from 0.4V to 3.4V (MAX8506, MAX8507)
· Externally Fixed Output from 0.75V to 3.4V (MAX8508)
· 1MHz Fixed-Frequency PWM Switching
· 600mA Guaranteed Output Current
· Shutdown Mode 0.1µA (typ)
· 16-Pin Thin QFN (4mm x 4mm, 0.8mm max Height)
MAX8508 Typical Application
·WCDMA/NCDMA Cell Phones
·Wireless PDAs, Palmtops, and Notebook
·Computers
·Wireless Modems
·Wireless PDAs, Palmtops, and Notebook
·Computers
·Wireless Modems
MAX8508
PDF/DataSheet Download
- Datasheet: MAX8508
- File Size: 636750 KB
- Manufacturer: MAXIM
- Click here to Download
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MAX8507
The MAX8506/MAX8507/MAX8508 integrate a PWM stepdown DC-DC regulator and a 75mΩ (typ) bypass FET to power the PA in WCDMA and cdmaOne™ cell phones.The supply voltage range is from 2.6V to 5.5V, and the guaranteed output current is 600mA. One mega...
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