MAX1709ESE Maxim Integrated Products, MAX1709ESE Datasheet

IC DC/DC CONV STEP-UP 4A 16-SOIC

MAX1709ESE

Manufacturer Part Number
MAX1709ESE
Description
IC DC/DC CONV STEP-UP 4A 16-SOIC
Manufacturer
Maxim Integrated Products
Type
Step-Up (Boost)r
Datasheet

Specifications of MAX1709ESE

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
3.3V, 5V, Adj
Current - Output
4A
Frequency - Switching
600kHz
Voltage - Input
0.7 ~ 5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Power - Output
1.3W
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
Q1226679

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The MAX1709 sets a new standard of space savings for
high-power, step-up DC-DC conversion. It delivers up
to 20W at a fixed (3.3V or 5V) or adjustable (2.5V to
5.5V) output, using an on-chip power MOSFET from a
+0.7V to +5V supply.
Fixed-frequency PWM operation ensures that the
switching noise spectrum is constrained to the 600kHz
fundamental and its harmonics, allowing easy postfilter-
ing for noise reduction. External clock synchronization
capability allows for even tighter noise spectrum con-
trol. Quiescent power consumption is less than 1mW to
extend operating time in battery-powered systems.
Two control inputs (ONA, ONB) allow simple push-on,
push-off control through a single momentary pushbut-
ton switch, as well as conventional on/off logic control.
The MAX1709 also features programmable soft-start
and current limit for design flexibility and optimum per-
formance with batteries.
The MAX1709 is supplied in both a high-power TSSOP
package, which allows a 10A
4A output, and a narrow SO package, which supplies a
2.4A output with a switch rated at 6A
narrow SO device has a lower RMS switch rating, it has
the same peak switch current rating as the TSSOP
device, and so can supply 4A loads intermittently. If
loads of 2A or less are required, refer to the MAX1708.
19-1724; Rev 2; 4/07
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
________________________Applications
INTERNAL
1V TO 5V
OFF ON
INPUT
SYNC
Routers, Servers, Workstations, Card Racks
Local 2.5V to 3.3V or 5V Conversion
Local 3.3V to 5V Conversion
3.6V or 5V RF PAs in Communications Handsets
OR
ONA
CLK
SS/LIM
REF
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
MAX1709
General Description
GND
OUT
LX
1μH
RMS
switch current and a
RMS
4A, Low-Noise, High-Frequency,
. Although the
OUTPUT
3.3V, 5V,
OR ADJ
UP TO 4A
Step-Up DC-DC Converter
o On-Chip 10A Power MOSFET
o 5V, 4A Output from a 3.3V Input
o Fixed 3.3V or 5V Output Voltage or
o Input Voltage Range Down to 0.7V
o Low Power Consumption
o Low-Noise, Constant Frequency Operation
o Synchronizable Switching Frequency
+ Indicates lead(Pb)-free/RoHS-compliant package.
* Exposed pad.
MAX1709ESE
MAX1709EUI+
Adjustable (2.5V to 5.5V)
(600kHz)
(350kHz to 1000kHz)
1mW Quiescent Power
1µA Current in Shutdown Mode
TOP VIEW
PART
SS/ILM
ONA
GND
GND
REF
NC
NC
LX
LX
LX
LX
LX
LX
LX
10
11
12
13
14
Ordering Informations
1
2
3
4
5
6
7
8
9
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
TSSOP-EP*
MAX1709
Pin Configuration
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PIN-PACKAGE
16 Narrow SO
28 TSSOP-EP*
ONB
CLK
3.3/5
NC
NC
PGND
PGND
PGND
PGND
PGND
PGND
NC
FB
OUT
Features
1

Related parts for MAX1709ESE

MAX1709ESE Summary of contents

Page 1

... Input Voltage Range Down to 0.7V o Low Power Consumption 1mW Quiescent Power 1µA Current in Shutdown Mode o Low-Noise, Constant Frequency Operation (600kHz) o Synchronizable Switching Frequency (350kHz to 1000kHz) PART MAX1709ESE . Although the RMS MAX1709EUI+ + Indicates lead(Pb)-free/RoHS-compliant package. * Exposed pad. TOP VIEW OUTPUT 3.3V, 5V, ...

Page 2

... LX Leakage Current V LX n-Channel Switch On-Resistance SS/LIM = open n-Channel Current Limit SS/LIM = 150kΩ to GND MAX1709EUI+ RMS Switch Current MAX1709ESE Reference Voltage I REF Reference Load Regulation -1µA < I Reference Supply Rejection +2.5V < V ONA, ONB, 3.3/5, 1.2V < V Input Low Level (Note 7) CLK, 2.7V < ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) = +3.6V, ONA = ONB = FB = GND OUT CLK PARAMETER ONA, ONB, 3.3/5, 1.2V < V Input High Level CLK, 2.7 V< V ONA, ONB, CLK, 3.3/5 Logic Input Current Internal ...

Page 4

Low-Noise, High-Frequency, Step-Up DC-DC Converter ELECTRICAL CHARACTERISTICS (continued) = +3.6V, ONA = ONB = FB = GND OUT CLK PARAMETER ONA, ONB, 3.3/5, 1.2V < V Input Low Level (Note 7) CLK, 2.7V < V ...

Page 5

A EFFICIENCY vs. OUTPUT CURRENT (V = 3.3V) OUT 100 2. 1. 0.001 0.01 0 OUTPUT ...

Page 6

Low-Noise, High-Frequency, Step-Up DC-DC Converter (Circuit of Figure +25°C, unless otherwise noted.) A SWITCH CURRENT LIMIT vs. SS/LIM RESISTANCE 100 150 200 250 300 SS/LIM RESISTANCE ...

Page 7

PIN TSSOP NARROW SO NAME 1 1 ONA 2– 11 GND 12 6 SS/LIM 13 7 REF 15 9 OUT 16 10 18–23 11, 12, 13 PGND 3.3 CLK 28 ...

Page 8

... MAX1709ESE has a 6A rating and supplies up to RMS 2.4A output. The MAX1709ESE has a lower RMS switch rating than the MAX1709EUI+, but has the same peak switch current limit and so can supply 4A loads inter- mittently. For flexibility, the current limit and soft-start rate are independently programmable ...

Page 9

... Power Dissipation ). Setting the Output Voltage The MAX1709 features Dual-Mode™ operation. When FB is connected to ground, the MAX1709 generates a fixed output voltage of either +3.3V or +5V, depending Dual Mode is a trademark of Maxim Integrated Products, Inc. _______________________________________________________________________________________ _______________________________________________________________________________________ 4A, Low-Noise, High-Frequency, Step-Up DC-DC Converter Table 2 ...

Page 10

Low-Noise, High-Frequency, Step-Up DC-DC Converter Table 3. Component Selection Guide PRODUCTION Coilcraft DO3316P-102HC Surface mount Coiltronics UP2B-1R0 Table 4. Component Suppliers SUPPLIER PHONE Coilcraft 847-639-6400 Coiltronics 561-241-7876 Motorola 602-303-5454 Panasonic 714-373-7939 STM- 617-259-0300 Microelectronics from its nominal value (see ...

Page 11

... For pulsed loads, output currents of 4 Amps or more can be supplied with either the MAX1709EUI+ or MAX1709ESE, but the RMS (or ther- mal) limit of the MAX1709ESE is lower (6A LIM that of the MAX1709EUI+ (10A current depends on the input and output voltage, oper- ating temperature, and external components ...

Page 12

... The thermal resistance from the die to the exposed pad is a very low 1.2°C/W. The MAX1709ESE’s ability to dissipate power will especially depend on the {8.23A} PC board design. Typical thermal resistance for 1in copper is 34° ...

Page 13

For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ 4A, Low-Noise, High-Frequency, Step-Up DC-DC Converter Package Information 13 ...

Page 14

Low-Noise, High-Frequency, Step-Up DC-DC Converter (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 14 ______________________________________________________________________________________ Package Information (continued) ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 15 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products ...

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