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MAX8667ETEJS-

Description
Switching Voltage Regulators 1.5MHz Dl Step-Down DC/DC Converter
Categorysemiconductor    Power management   
File Size386KB,18 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX8667ETEJS- Overview

Switching Voltage Regulators 1.5MHz Dl Step-Down DC/DC Converter

MAX8667ETEJS- Parametric

Parameter NameAttribute value
Product CategorySwitching Voltage Regulators
ManufacturerMaxim
RoHSDetails
Mounting StyleSMD/SMT
Package / CaseTQFN-EP-16
Output Voltage600 mV to 3.3 V
Output Current600 mA, 1.2 A
Number of Outputs4 Output
Input Voltage MAX5.5 V
TopologyBuck
Input Voltage MIN2.8 V
Switching Frequency1.5 MHz
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 85 C
PackagingTube
Factory Pack Quantity100
TypeVoltage Converter
19-0784; Rev 1; 7/07
KIT
ATION
EVALU
E
BL
AVAILA
1.5MHz Dual Step-Down DC-DC Converters
with Dual LDOs and Individual Enables
General Description
The MAX8667/MAX8668 dual step-down converters
with dual low-dropout (LDO) linear regulators are
intended to power low-voltage microprocessors or
DSPs in portable devices. They feature high efficiency
with small external component size. The step-down
converters are adjustable from 0.6V to 3.3V (MAX8668)
or factory preset (MAX8667) with guaranteed output
current of 600mA for OUT1 and 1200mA for OUT2. The
1.5MHz hysteretic-PWM control scheme allows for tiny
external components and reduces no-load operating
current to 100µA with all outputs enabled. Dual low-qui-
escent-current, low-noise LDOs operate down to 1.7V
supply voltage. The MAX8667/MAX8668 have individ-
ual enables for each output, maximizing flexibility.
The MAX8667/MAX8668 are available in the space-
saving, 3mm x 3mm, 16-pin thin QFN package.
Features
o
Tiny, Thin QFN 3mm x 3mm Package
o
Individual Enables
o
Step-Down Converters
600mA Guaranteed Output Current on OUT1
1200mA Guaranteed Output Current on OUT2
Tiny Size 2.2µH Chip Inductor (0805)
Output Voltage from 0.6V to 3.3V (MAX8668)
Ultra-Fast Line and Load Transients
Low 25µA Supply Current Each
o
LDOs
300mA Guaranteed
Low 1.7V Minimum Supply Voltage
Low Output Noise
MAX8667/MAX8668
Ordering Information
PART
MAX8667ETEAA+
MAX8667ETEAB+
MAX8667ETEAC+
MAX8667ETECQ+
PKG CODE
T1633-4
T1633-4
T1633-4
T1633-4
TOP MARK
AEQ
AFI
AFM
AFN
Applications
Cell Phones/Smartphones
PDA and Palmtop Computers
Portable MP3 and DVD Players
Digital Cameras, Camcorders
PCMCIA Cards
Handheld Instruments
Note:
All MAX8667/MAX8668 parts are in a 16-pin, thin QFN,
3mm x 3mm package and operate in the -40°C to +85°C
extended temperature range.
+Denotes
a lead-free package.
Ordering Information continued at the end of data sheet.
Selector Guide appears at the end of data sheet.
Typical Operating Circuit
IN12
2.6V TO 5.5V
10µF
IN12
EN1
EN2
REF
0.01µF
GND
IN34
EN3
EN4
OUT3
300mA
OUT4
4.7µF
4.7µF
OUT1 (FB1) 14
EN1 15
EN2 16
2.2µH
LX1
2.2µF
OUT1
PGND1
LX2
OUT2
PGND2
2.2µF
1.2A
1
EN3
2
OUT3
300mA
PGND1 13
4.7µF
LX1
Pin Configuration
TOP VIEW
PGND2
9
8
7
OUT2 (FB2)
REF
GND
EN4
6
5
3
IN34
4
OUT4
12
11
10
MAX8667
MAX8668
MAX8667
600mA
2.2µH
THIN QFN
(3mm x 3mm)
( ) ARE FOR THE MAX8668
________________________________________________________________
Maxim Integrated Products
LX2
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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