MAX1760EUB+ Maxim Integrated Products, MAX1760EUB+ Datasheet

IC DC/DC CONV STEP-UP .8A 10UMAX

MAX1760EUB+

Manufacturer Part Number
MAX1760EUB+
Description
IC DC/DC CONV STEP-UP .8A 10UMAX
Manufacturer
Maxim Integrated Products
Type
Step-Up (Boost)r
Datasheet

Specifications of MAX1760EUB+

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
3.3V, 2.5 ~ 5.5 V
Current - Output
800mA
Frequency - Switching
1MHz
Voltage - Input
0.7 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Power - Output
444mW
Output Voltage
2.5 V to 5.5 V
Output Current
800 mA
Input Voltage
0.7 V to 5.5 V
Supply Current
100 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX1760/MAX1760H are high-efficiency, low-noise,
step-up DC-DC converters intended for use in battery-
powered wireless applications. They combine low quies-
cent supply current (100µA) with a high 1MHz operating
frequency. Small external components and tiny 10-pin
TDFN and µMAX
lent choice for small hand-held applications. The
MAX1760 is activated by a logic-low ON signal while the
MAX1760H is activated by a logic-high ON input.
Both devices use a synchronous-rectified pulse-width-
modulation (PWM) boost topology to generate 2.5V to
5.5V outputs from a wide range of inputs, such as 1 to 3
alkaline or NiCd/NiMH cells or a single lithium-ion (Li+)
cell. Proprietary Idle-Mode™ circuitry significantly
improves light-load efficiency and smoothly transitions to
fixed-frequency PWM operation at higher load currents.
Low-noise, forced-PWM mode is available for applica-
tions requiring constant-frequency operation at all load
currents. PWM operation can also be synchronized to
an external clock to protect sensitive frequency bands
in communications equipment. Analog soft-start and
adjustable current limit permit optimization of efficiency,
external component size, and output voltage ripple.
19-1660; Rev 3; 1/07
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Idle Mode is a trademark of Maxim Integrated Products, Inc.
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.
INPUT = 0.7V
Digital Cordless Phones
Wireless Handsets
Palmtop Computers
Two-Way Pagers
TO V
OUT
Typical Operating Circuit
®
________________________________________________________________ Maxim Integrated Products
packages make this device an excel-
ON
CLK/SEL
ISET
REF
FB
MAX1760
General Description
GND
PGND
PCS Phones
Handheld Instruments
POUT
Personal Communicators
OUT
LX
Applications
V
800mA
OUT
= 3.3V,
Step-Up DC-DC Converter
0.8A, Low-Noise, 1MHz,
♦ Up to 94% Efficiency
♦ 0.7V to 5.5V Input Range
♦ Up to 800mA Output
♦ Fixed 3.3V Output (or Adjustable from 2.5V to 5.5V)
♦ PWM Synchronous-Rectified Topology
♦ Low-Noise, Constant-Frequency Operation (1MHz)
♦ 0.1µA Logic-Controlled Shutdown
♦ Synchronizable Switching Frequency
♦ Adjustable Current Limit
♦ Adjustable Soft-Start
♦ 10-Pin µMAX Package
♦ 10-Pin 3mm x 3mm TDFN Package
*EP = Exposed paddle.
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
MAX1760ETB
MAX1760EUB
MAX1760HETB
MAX1760HEUB
GND
ISET
OUT
REF
FB
(ON) FOR MAX1760H
TOP VIEW
1
2
3
4
5
PART
MAX1760H
MAX1760
MAX
PIN-
PACKAGE
10 TDFN-EP*
10 µMAX
10 TDFN-EP*
10 µMAX
10
9
8
7
6
ON (ON)
POUT
LX
PGND
CLK/SEL
Ordering Information
Pin Configurations
GND
ISET
OUT
REF
FB
1
2
3
4
5
LOGIC
High
High
Low
Low
ON
(3mm x 3mm)
MAX1760H
MAX1760
TDFN
Features
PKG CODE
T1033-1
T1033-1
U10-2
U10-2
10
9
8
7
6
ON (ON)
POUT
LX
PGND
CLK/SEL
1

Related parts for MAX1760EUB+

MAX1760EUB+ Summary of contents

Page 1

... REF OUT FB GND PGND µMAX is a registered trademark of Maxim Integrated Products, Inc. Idle Mode is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products 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. 0.8A, Low-Noise, 1MHz, Step-Up DC-DC Converter ♦ ...

Page 2

Low-Noise, 1MHz, Step-Up DC-DC Converter ABSOLUTE MAXIMUM RATINGS ON, ON, OUT, CLK/SEL to GND ..................................-0.3V to +6V PGND to GND ..........................................................................±0. PGND .................................................-0. POUT to OUT ...........................................................................±0.3V REF, FB, ISET, POUT to GND.......................-0. ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) (CLK/SEL = FB = PGND = GND, ISET = REF, OUT = POUT, V unless otherwise noted.) PARAMETER Switch On-Resistance N-Channel Current Limit P-Channel Turn-Off Current REFERENCES Reference Output Voltage Reference Load Regulation Reference Supply Rejection LOGIC ...

Page 4

Low-Noise, 1MHz, Step-Up DC-DC Converter ELECTRICAL CHARACTERISTICS (continued) (CLK/SEL = FB = PGND = GND, ISET = REF, OUT = POUT, V PARAMETER N-Channel Current Limit REFERENCE Reference Output Voltage LOGIC INPUTS CLK/SEL Input Low Level CLK/SEL Input High ...

Page 5

Figure 2.4V 3.3V OUT NO-LOAD BATTERY CURRENT vs. INPUT VOLTAGE 2.5 2.0 1.5 1 OUT 0 3.3V OUT 0 INPUT VOLTAGE ...

Page 6

Low-Noise, 1MHz, Step-Up DC-DC Converter (Circuit of Figure 2.4V 3.3V OUT NOISE SPECTRUM 0 FREQUENCY (MHz) PIN NAME N-Channel Current-Limit Control. For maximum current limit, ...

Page 7

OUT IC POWER 2.15V ON (MAX1760H (MAX1760) REFERENCE 1.25V REF REF GND CLK/SEL FB ISET MAX1760 Figure 1. Functional Diagram Detailed Description The MAX1760 is a highly efficient, low-noise power sup- ply for portable RF and hand-held instruments. ...

Page 8

Low-Noise, 1MHz, Step-Up DC-DC Converter Table 1. Typical Available Output Current NUMBER OF NiCd/NiMH CELLS Table 2. Selecting the Operating Mode CLK/SEL MODE 0 Normal operation 1 Forced PWM External clock Synchronized PWM 500kHz to 1.2MHz ...

Page 9

V = 2.4V IN Figure 3. Connecting Resistors for External Feedback REF 0. MAX1760 ISET C SS Figure 4. Soft-Start with Maximum Switch Limit Current The MAX1760 has an internal 1.250V ±1% reference. Connect a 0.22µF ceramic ...

Page 10

Low-Noise, 1MHz, Step-Up DC-DC Converter Table 3. Component Selection Guide PRODUCTION METHOD TOKO type D518LC Surface mount Sumida CDRH5D18 Sumida CDRH4D28 Table 4. Component Suppliers SUPPLIER PHONE AVX USA: 843-448-9411 EIC USA: 916-941-0712 Kemet USA: 810-287-2536 USA: 408-629-4789 Motorola ...

Page 11

The input filter capacitor reduces peak currents drawn from the input source and also reduces input switching noise. The input voltage source impedance determines the required value of ...

Page 12

Low-Noise, 1MHz, 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 www.maxim-ic.com/packages Ø 0.50±0.1 0.6±0.1 1 0.6±0.1 TOP VIEW D2 A2 ...

Page 13

For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ ______________________________________________________________________________________ 0.8A, Low-Noise, 1MHz, Step-Up DC-DC Converter Package Information (continued) PACKAGE OUTLINE, 6,8,10 & 14L, TDFN, ...

Page 14

... 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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products Package Information (continued) PACKAGE VARIATIONS PKG ...

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