MAX5008CUB Maxim Integrated Products, MAX5008CUB Datasheet

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MAX5008CUB

Manufacturer Part Number
MAX5008CUB
Description
Charge Pumps Regulated 5V USB Charge Pump
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX5008CUB

Function
Step Up, Step Down
Output Voltage
5 V
Output Current
140 mA
Maximum Operating Temperature
+ 70 C
Package / Case
uMAX-10
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX5008CUB
Manufacturer:
MAXIM/美信
Quantity:
20 000
Part Number:
MAX5008CUB+T
Manufacturer:
MAXIM/美信
Quantity:
20 000
The MAX5008 charge-pump regulator generates a reg-
ulated 5V output up to 125mA with a 2.95V to 5.5V input
voltage range. The device includes resistor-program-
mable overcurrent limit. The MAX5008 requires a mini-
mum number of external components for normal
operation. The high 1MHz switching frequency allows
the use of small surface-mount ceramic capacitors.
The fault-protection circuitry limits the output current
when it exceeds the limit set by an external resistor.
The output current can range from 1mA to 150mA to
accommodate circuit requirements. A FAULT output
indicates when the device is in current limit or the out-
put is out of regulation.
A low-power shutdown mode reduces supply current to
less than 1µA and places the output in a high-imped-
ance state. The MAX5008 is offered in a space-saving
10-pin µMAX
19-2426; Rev 1; 7/06
µMAX is a registered 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.
Flash Memory Supplies
USB Host Devices
Battery-Powered Systems
3.3V to 5V Local Conversion
®
package that is only 1.1mm high.
________________________________________________________________ Maxim Integrated Products
General Description
Regulated 5V USB Charge Pump with
2.95V TO 5.5V
V
Applications
IN
4.7 F
*USE IF PRECISION CURRENT LIMIT IS REQUIRED.
100k
8
5
3
Programmable Current Limit
SHDN
FAULT
IN
7
4
CXN
GND
MAX5008
0.68 F
C
X
PGND
6
CXP
9
CEXT
OUT
RCS
♦ Regulated 5V Output Up to 125mA
♦ Indefinite Short-Circuit Protection
♦ Adjustable Output Current Limit
♦ No Inductors Required
♦ 0.1µA Shutdown Current
♦ Thermal Shutdown
♦ Fault Output Indicates Overcurrent or Output
♦ 2.95V to 5.5V Input Voltage Range
♦ 10-Pin µMAX Package
Pin Configuration appears at end of data sheet.
MAX5008CUB
Voltage Out of Regulation
10
2
1
I
OUT
PART
47nF*
200 *
200 *
Typical Operating Circuit
R
0.4
CS
C
6.8 F
EXT
TEMP RANGE
Ordering Information
0°C to +70°C
C
4.7 F
OUT
V
5V
OUT
10 µMAX
PIN-PACKAGE
Features
1

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MAX5008CUB Summary of contents

Page 1

... No Inductors Required ♦ 0.1µA Shutdown Current ♦ Thermal Shutdown ♦ Fault Output Indicates Overcurrent or Output Voltage Out of Regulation ♦ 2.95V to 5.5V Input Voltage Range ♦ 10-Pin µMAX Package Applications PART MAX5008CUB Pin Configuration appears at end of data sheet 0. CXN CXP ...

Page 2

Regulated 5V USB Charge Pump with Programmable Current Limit ABSOLUTE MAXIMUM RATINGS IN, SHDN, RCS, FAULT, OUT to GND .....................-0.3V to +6V PGND to GND.....................................................................±0.3V CXN to GND ................................................-0. CXP to GND ............................................-0. CEXT to GND ...

Page 3

Regulated 5V USB Charge Pump with ELECTRICAL CHARACTERISTICS (continued) = SHDN = 3V 4.7µ 0.68µ Typical values are +25°C.) A PARAMETER SYMBOL Thermal Shutdown Junction Temperature Thermal Shutdown ...

Page 4

Regulated 5V USB Charge Pump with Programmable Current Limit ( 4.7µ 0.47µ OUT EFFICIENCY vs. LOAD CURRENT 100 V = 2.95V 3.3V IN ...

Page 5

Regulated 5V USB Charge Pump with PIN NAME External Current-Sense Resistor. Connect a resistor from RCS to OUT to set the overcurrent 1 RCS threshold OUT Fixed 5V Output. Bypass OUT to GND with a 4.7µF capacitor. Output ...

Page 6

Regulated 5V USB Charge Pump with Programmable Current Limit Functional Diagram IN CXN SWITCHES CXP CONTROL MAX5008 PGND FAULT SHDN low-impedance trace, and connect the ground for and C directly to PGND in a star configura- EXT ...

Page 7

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7 © 2006 Maxim Integrated Products ...

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