Purchase MAX1572, In-stock MAX1572 From SeekIC.
Part Number: MAX1572
Description: The MAX1572 is a fixed-frequency, synchronous stepdown DC-to-DC converter to power low-voltage micropr...
- Table of contents:
MAX1572
-
Suppliers
DataSheet
General Description
MAX1572 General Description
The MAX1572 is a fixed-frequency, synchronous stepdown DC-to-DC converter to power low-voltage microprocessor/DSP cores in portable equipment requiring high efficiency in a limited PC board area. The features are optimized for high efficiency over a wide load range, small external component size, low output ripple, and excellent transient response. The input supply voltage range is from 2.6V to 5.5V, while the output is internally fixed from 0.75V to 2.5V in 50mV increments with a guaranteed output current of 800mA. The high 2MHz switching allows tiny low-cost capacitors and a low-profile inductor, while the power-saving pulse-group mode reduces quiescent current to 48µA (typ) with light loads. To reduce noise and RF interference, the converter can be configured to provide forced-PWM operation.
The MAX1572 includes a low on-resistance internal MOSFET switch and synchronous rectifier to maximize efficiency and minimize external component count. No external diode is needed. Other features include softstart to eliminate inrush current at startup and a 170ms (min) RESET output to provide power-on/undervoltage reset. The MAX1572 is available in a 12-pin, 4mm x 4mm thin QFN package with exposed paddle.
MAX1572 Maximum Ratings
ABATT, BATT, EN1, EN2, RESET, OUT,
SS to GND ................................................................-0.3V to +6V
PGND to GND .........................................................-0.3V to +0.3V
LX Current (Note 1) ............................................................±2.1A
Output Short-Circuit Duration ...........................................Infinite
Continuous Power Dissipation (TA = +70°C)
12-Pin Thin QFN (derate 16.9mW/°C above +70°C).....1349mW
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.
SS to GND ................................................................-0.3V to +6V
PGND to GND .........................................................-0.3V to +0.3V
LX Current (Note 1) ............................................................±2.1A
Output Short-Circuit Duration ...........................................Infinite
Continuous Power Dissipation (TA = +70°C)
12-Pin Thin QFN (derate 16.9mW/°C above +70°C).....1349mW
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.
MAX1572 Features
Up to 97% Efficiency
2MHz PWM Switching
800mA Guaranteed Output Current
Low 48µA Quiescent Current
Power-Saving Modes: Pulse-Group, Pulse-Skip, Forced-PWM Mode
0.75V to 2.5V Preset Output Range (in 50mV Increments)
Voltage-Positioning Load Transients
5mVP-P Output Ripple
Tiny 2.2µH Inductor
10µF Ceramic Output Capacitor
Low 0.1µA Shutdown Current
No External Schottky Diode Required
Soft-Start with Zero Inrush Current
170ms (min) RESET Output
Small 12-Pin, 4mm x 4mm Thin QFN Package
2MHz PWM Switching
800mA Guaranteed Output Current
Low 48µA Quiescent Current
Power-Saving Modes: Pulse-Group, Pulse-Skip, Forced-PWM Mode
0.75V to 2.5V Preset Output Range (in 50mV Increments)
Voltage-Positioning Load Transients
5mVP-P Output Ripple
Tiny 2.2µH Inductor
10µF Ceramic Output Capacitor
Low 0.1µA Shutdown Current
No External Schottky Diode Required
Soft-Start with Zero Inrush Current
170ms (min) RESET Output
Small 12-Pin, 4mm x 4mm Thin QFN Package
MAX1572 Typical Application
Cell Phones and Smart Phones
PDAs, Palmtops, and Notebook Computers
MP3 and DVD Players
Digital Cameras and Camcorders
PCMCIA Cards
Hand-Held Instruments
PDAs, Palmtops, and Notebook Computers
MP3 and DVD Players
Digital Cameras and Camcorders
PCMCIA Cards
Hand-Held Instruments
MAX1572 Connection Diagram
MAX1572
PDF/DataSheet Download
- Datasheet: MAX1572
- File Size: 281363 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
- ·MAX002
- FILTRONIC [Filtronic Compound Semiconductors]
- Optical Communications - Modulator Driver Amplifier
- 42133 KB
- ·MAX038
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038C/D
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038CPP
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038CWP
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038EPP
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038EVKIT
- Maxim
- Evaluation Kit for the MAX038
- 106491 KB
- ·MAX038EWP
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
MAX1572 Relative Products
MAX1570ETE+T
IC LED DRVR WHITE BCKLGT 16-TQFN
-
MAX1570ETE+
IC LED DRVR WHITE BCKLGT 16-TQFN
MAX1570
The MAX1570 fractional charge pump drives up to five white LEDs with regulated constant current for uniform intensity. The MAX1570 maintains the highest possible efficiency over the full 1-cell lithium-ion (Li+) battery input voltage range by utilizing a 1x/...
MAX157
The MAX157/MAX159 low-power, 10-bit analog-to-digi-tal converters (ADCs) are available in 8-pin µMAX and DIP packages. Both devices operate with a single+2.7V to +5.25V supply and feature a 7.4µs succes-sive-approximation ADC, automatic power-dow...
MAX156BENG+
IC ADC 8BIT 8CH T/H&REF 24-DIP
-
MAX156BCNG+
IC ADC 8BIT 8CH T/H&REF 24-DIP
Hotspot Suppliers Product
GRM155R61C104KA88D
Price: 0.001-0.002 USD
0.1uF, 16V, Monolithic Ceramic Capacitor, MLCC, Murata Manufacturing Co., Ltd., GRM155R61C104KA88D
6MBP75RA060
Price: 10-35 USD
IGBT-IPM, MODULE, Low power loss, soft switching, High performance, high reliability IGBT
TC37
Price: 16.8-18.2 USD
TC37, MODULE, Siemens Semiconductor Group
PTH05060WAH
Price: 9.05-9.52 USD
non-isolated power module, 0.8 ~ 3.6 V, 10A, 36W, RoHS Non-Compliant
LW015A
Price: 1-2 USD
CONVERTER DC/DC 5V 15W OUT - LW015A
TM10T3B-H
Price: 10-30 USD
mitsubishi thyristor module, GBT, 20A
HLE-105-02-G-DV
Price: 1.6-1.9 USD
CONN RCPT 10POS .100" SMD GLD - HLE-105-02-G-DV
MC56F8037VLH
Price: 4.5-8 USD
16-bit, Digital Signal Controller, 32MHz
FWIXP422BB/425BB
Price: 15.2-18 USD
Network Processors, Two High-Speed, Intel 0.18-μ
LM7812T
Price: 1-2 USD
1A, Positive Voltage, Regulator, TO-220
TMK212BJ105KG-T
Price: 0.01-0.05 USD
high value multilayer ceramic capacitor, high dielectric type, 1uF, Low equivalent series resistance
CY28349BOC
Price: 2-3 USD
FTG, 48-pin SSOP, –0.5 to +7.0V, 1W, 1-MHz, Integrated fail-safe Watchdog timer, Vendor ID
