Rainbow Electronics MAX9634 - Manual

General Description
The MAX9634 high-side current-sense amplifier offers
precision accuracy specifications of V
OS less than
250µV (max) and gain error less than 0.5% (max).
Quiescent supply current is an ultra-low 1µA. The
MAX9634 fits in a tiny, 1mm x 1mm UCSP™ package
size or a 5-pin SOT23 package, making the part ideal for
applications in notebook computers, cell phones, PDAs,
and all battery-operated portable devices where accura-
cy, low quiescent current, and small size are critical.
The MAX9634 features an input common-mode voltage
range from 1.6V to 28V. These current-sense amplifiers
have a voltage output and are offered in four gain versions:
25V/V (MAX9634T), 50V/V (MAX9634F), 100V/V
(MAX9634H), and 200V/V (MAX9634W).
The four gain selections offer flexibility in the choice of
the external current-sense resistor. The very low 250µV
(max) input offset voltage allows small 25mV to 50mV
full-scale V
SENSE
voltage for very low voltage drop at
full-current measurement.
The MAX9634 is offered in tiny 4-bump UCSP (1mm x
1mm x 0.6mm footprint) and 5-pin SOT23 packages
specified for operation over the -40°C to +85°C extend-
ed temperature range.
Applications
Cell Phones
PDAs
Power-Management Systems
Portable/Battery-Powered Systems
Notebook Computers
Features
♦ Ultra-Low Supply Current of 1µA (max)
♦ Low 250µV (max) Input Offset Voltage
♦ Low < 0.5% (max) Gain Error
♦ Input Common Mode: +1.6V to +28V
♦ Voltage Output
♦ Four Gain Versions Available
25V/V (MAX9634T)
50V/V (MAX9634F)
100V/V (MAX9634H)
200V/V (MAX9634W)
♦ Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP or
5-Pin SOT23 Packages
MAX9634
1µA, 4-Bump UCSP/SOT23,
Precision Current-Sense Amplifier
________________________________________________________________ Maxim Integrated Products 1
MAX9634T/F/H/W MAX9634T/F/H/W
5 4
1 3 2
RS+ RS-
GND OUT GND
SOT23
UCSP
TOP VIEW
(BUMPS ON BOTTOM)
B1 B2
A1
GND
RS+
OUT
RS- A2
DRAWINGS NOT TO SCALE
Pin Configurations
19-5021; Rev 1; 2/10
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.
EVALUATION KIT
AVAILABLE
UCSP is a trademark of Maxim Integrated Products, Inc.
Ordering Information
+ Denotes a lead(Pb)-free/RoHS-compliant package.
Note: All devices are specified over the -40°C to +85°C
extended temperature range.
PART
PIN-
PACKAGE GAIN
(V/V)
TOP
MARK
MAX9634TERS+ 4 UCSP 25 +ABX
MAX9634FERS+ 4 UCSP 50 +ABY
MAX9634HERS+ 4 UCSP 100 +ABZ
MAX9634WERS+ 4 UCSP 200 +ACA
MAX9634TEUK+ 5 SOT23 25 +AFHG
MAX9634FEUK+ 5 SOT23 50 +AFHH
MAX9634HEUK+ 5 SOT23 100 +AFHI
MAX9634WEUK+ 5 SOT23 200 +AFHJ