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PDF MAX1654EEE Data sheet ( Hoja de datos )
| Número de pieza | MAX1654EEE | |
| Descripción | High-Efficiency / PWM / Step-Down DC-DC Controllers in 16-Pin QSOP | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1357; Rev 1; 7/98
EVAALVUAAILTAIOBNLEKIT
High-Efficiency, PWM, Step-Down
DC-DC Controllers in 16-Pin QSOP
General Description
The MAX1652–MAX1655 are high-efficiency, pulse-
width-modulated (PWM), step-down DC-DC controllers
in small QSOP packages. The MAX1653/MAX1655 also
come in 16-pin narrow SO packages that are pin-
compatible upgrades to the popular MAX797. Improve-
ments include higher duty-cycle operation for better
dropout, lower quiescent supply currents for better
light-load efficiency, and an output voltage down to 1V
(MAX1655).
The MAX1652–MAX1655 achieve up to 96% efficiency
and deliver up to 10A using a unique Idle Mode™ syn-
chronous-rectified PWM control scheme. These devices
automatically switch between PWM operation at heavy
loads and pulse-frequency-modulated (PFM) operation
at light loads to optimize efficiency over the entire out-
put current range. The MAX1653/MAX1655 also feature
logic-controlled, forced PWM operation for noise-sensi-
tive applications.
All devices operate with a selectable 150kHz/300kHz
switching frequency, which can also be synchronized
to an external clock signal. Both external power switch-
es are inexpensive N-channel MOSFETs, which provide
low resistance while saving space and reducing cost.
The MAX1652 and MAX1654 have an additional feed-
back pin that permits regulation of a low-cost second
output tapped from a transformer winding. The
MAX1652 provides an additional positive output. The
MAX1654 provides an additional negative output.
The MAX1652–MAX1655 have a 4.5V to 30V input volt-
age range. The MAX1652/MAX1653/MAX1654’s output
range is 2.5V to 5.5V while the MAX1655’s output range
extends down to 1V. An evaluation kit (MAX1653EVKIT)
is available to speed designs.
Applications
Notebook Computers
PDAs
Cellular Phones
Hand-Held Computers
Handy-Terminals
Mobile Communicators
Distributed Power
Pin Configurations appear at end of data sheet.
Idle Mode is a trademark of Maxim Integrated Products.
____________________________Features
o 96% Efficiency
o Small, 16-Pin QSOP Package
(half the size of a 16-pin narrow SO)
o Pin-Compatible with MAX797 (MAX1653/MAX1655)
o Output Voltage Down to 1V (MAX1655)
o 4.5V to 30V Input Range
o 99% Duty Cycle for Lower Dropout
o 170µA Quiescent Supply Current
o 3µA Logic-Controlled Shutdown
o Dual, N-Channel, Synchronous-Rectified Control
o Fixed 150kHz/300kHz PWM Switching,
or Synchronized from 190kHz to 340kHz
o Programmable Soft Start
o Low-Cost Secondary Outputs (MAX1652/MAX1654)
PART
MAX1652EEE
MAX1653ESE
MAX1653EEE
MAX1654EEE
MAX1655ESE
MAX1655EEE
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 QSOP
16 Narrow SO
16 QSOP
16 QSOP
16 Narrow SO
16 QSOP
Selection Guide
PART
FEEDBACK
VOLTAGE (V)
SPECIAL
FEATURE
COMPATIBILITY
Regulates positive Same pin order
MAX1652 2.5 secondary voltage as MAX796, but
(such as +12V) smaller package
MAX1653
2.5
Logic-controlled, Pin-compatible
low-noise mode with MAX797
Regulates negative Same pin order
MAX1654 2.5 secondary voltage as MAX799, but
(such as -5V)
smaller package
Low output volt- Pin compatible
MAX1655
1
ages (1V to 5.5V); with MAX797
logic-controlled, (except for feed-
low-noise mode back voltage)
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
1 page  
High-Efficiency, PWM, Step-Down
DC-DC Controllers in 16-Pin QSOP
Typical Operating Circuits
INPUT
4.5V TO 30V
V+
SHDN
VL
MAX1653
MAX1655 DH
BST
SS LX
REF DL
PGND
SYNC
GND
SKIP
CSH
CSL
FB
+3.3V
OUTPUT
INPUT
6V TO 30V
V+ SECFB
SHDN
FB
VL
MAX1652
DH
BST
LX
DL
SS PGND
REF CSH
GND CSL
SYNC
+12V
OUTPUT
+5V
OUTPUT
_______________________________________________________________________________________ 5
5 Page 
High-Efficiency, PWM, Step-Down
DC-DC Controllers in 16-Pin QSOP
Table 1. Component Selection for Standard Applications
COMPONENT
3.3V at 1A
Input Range 4.75V to 28V
Frequency 300kHz
Q1 High-Side International Rectifier
MOSFET
1/2 IRF7101
3.3V at 2A
4.75V to 28V
300kHz
International Rectifier
1/2 IRF7303 or
Fairchild
Semiconductor
1/2 NDS8936
5V/3.3V at 3A
4.75V to 28V
300kHz
International Rectifier
IRF7403 or
Fairchild
Semiconductor
NDS 8410A
3.3V at 5A
4.75V to 28V
300kHz
Fairchild
Semiconductor
FDS6680
1.8V at 2.5A
4.75V to 22V
150kHz
International Rectifier
1/2 IRF7303 or
Fairchild
Semiconductor
1/2 NDS8936
Q2 Low-Side International Rectifier
MOSFET
1/2 IRF7101
International Rectifier
1/2 IRF7303 or
Fairchild
Semiconductor
1/2 NDS8936
International Rectifier
IRF7403 or
Fairchild
Semiconductor
NDS 8410A
Fairchild
Semiconductor
FDS6680
International Rectifier
1/2 IRF7303 or
Fairchild
Semiconductor
1/2 NDS8936
C1 Input
Capacitor
10µF, 35V
22µF, 35V
AVX AVX
TPSD106M035R0300 TPSE226M035R0300
(2) 22µF, 35V
AVX
TPSE226M035R0300
(3) 22µF, 35V
AVX
TPSE226M035R0300
10µF, 25V ceramic
Taiyo Yuden
TMK325F106Z
C2 Output
Capacitor
100µF, 6.3V
AVX TPSC107M006R
220µF, 10V
AVX
TPSE227M010R0100
or Sprague
594D227X001002T
470µF, 6V (for 3.3V)
Kemet
T510X477M006AS
or
(2) 220µF, 10V (for 5V)
AVX
TPSE227M010R011
(3) 330µF, 10V
Sprague
594D337X0010R2T
or
(2) 470µF, 6V
Kemet
T510X477M006AS
470µF, 4V
Sprague
594D477X0004R2T
or
470µF, 6V
Kemet
T510X477M006AS
D1 Rectifier
1N5819 or Motorola
MBR0520L
1N5819 or Motorola
MBRS130LT3
1N5819 or Motorola
MBRS130LT3
1N5821 or Motorola
MBRS340T3
1N5817 or Motorola
MBRS130LT3
R1 Sense
Resistor
70mΩ
33mΩ
Dale WSL-1206-R070F Dale WSL-2010-R033F
or IRC LR2010-01-R070 or IRC LR2010-01-R033
25mΩ
Dale WSL-2010-R025F
or IRC LR2010-01-R025
12mΩ
Dale WSL-2512-R012F
30mΩ
Dale WSL-2010-R030F
or IRC LR2010-01-R030
L1 Inductor
33µH
15µH
10µH
4.7µH
15µH
Sumida CDR74B-330 Sumida CDR105B-150 Sumida CDRH125-100 Sumida CDRH127-4R7 Sumida CDRH125-150
Table 2. Component Suppliers
MANUFACTURER
AVX
Central Semiconductor
Coilcraft
Coiltronics
Dale
Fairchild
International Rectifier
IRC
Kemet
Matsuo
Motorola
USA PHONE
803-946-0690
516-435-1110
847-639-6400
561-241-7876
605-668-4131
408-822-2181
310-322-3331
512-992-7900
408-986-0424
714-969-2491
602-303-5454
FACTORY FAX
[Country Code]
[1] 803-626-3123
[1] 516-435-1824
[1] 847-639-1469
[1] 561-241-9339
[1] 605-665-1627
[1] 408-721-1635
[1] 310-322-3332
[1] 512-992-3377
[1] 408-986-1442
[1] 714-960-6492
[1] 602-994-6430
MANUFACTURER
Murata
NIEC
Sanyo
Siliconix
Sprague
Sumida
Taiyo Yuden
TDK
Transpower Technologies
USA PHONE
814-237-1431
800-831-9172
805-867-2555*
619-661-6835
408-988-8000
800-554-5565
603-224-1961
847-956-0666
408-573-4150
847-390-4461
702-831-0140
FACTORY FAX
[Country Code]
[1] 814-238-0490
[81] 3-3494-7414
[81] 7-2070-1174
[1] 408-970-3950
[1] 603-224-1430
[81] 3-3607-5144
[1] 408-573-4159
[1] 847-390-4405
[1] 702-831-3521
* Distributor
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet MAX1654EEE.PDF ] | |
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