MAX890LESA+T Maxim Integrated Products, MAX890LESA+T Datasheet

IC SW MOSFET PUR PCH HSIDE 8SOIC

MAX890LESA+T

Manufacturer Part Number
MAX890LESA+T
Description
IC SW MOSFET PUR PCH HSIDE 8SOIC
Manufacturer
Maxim Integrated Products
Type
High Side Switchr
Datasheet

Specifications of MAX890LESA+T

Number Of Outputs
1
Rds (on)
130 mOhm
Internal Switch(s)
Yes
Current Limit
1.2A
Voltage - Input
2.7 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX889 inverting charge pump delivers a regulated
negative output voltage at loads of up to 200mA. The
device operates with inputs from 2.7V to 5.5V to produce
an adjustable, regulated output from -2.5V to -V
The MAX889 is available with an operating frequency of
2MHz (T version), 1MHz (S version), or 0.5MHz (R ver-
sion). The higher switching frequency devices allow the
use of smaller capacitors for space-limited applica-
tions. The lower frequency devices have lower quies-
cent current.
The MAX889 also features a 0.1µA logic-controlled
shutdown mode and is available in an 8-pin SO pack-
age. An evaluation kit, MAX889SEVKIT, is available.
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
19-1774; Rev 0; 7/00
________________________Applications
OFF
INPUT +2.7V TO +5.5V
TFT Panels
Hard Disk Drives
Camcorders
Digital Cameras
Measurement Instruments
Battery-Powered Applications
ON
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
SHDN
CAP+
CAP-
General Description
MAX889
AGND
IN
GND
OUT
FB
200mA, Inverting Charge Pump
(UP TO -1 × V
UP TO 200mA)
REGULATED
NEGATIVE
OUTPUT
IN
.
High-Frequency, Regulated,
IN
,
o 200mA Output Current
o Up to 2MHz Switching Frequency
o Small Capacitors (1µF)
o +2.7V to +5.5V Input Voltage Range
o Adjustable Regulated Negative Output
o 0.1µA Logic-Controlled Shutdown
o Low 0.05Ω Output Resistance (in regulation)
o Soft-Start and Foldback Current Limited
o Short-Circuit and Thermal Shutdown Protected
o 8-Pin SO Package
MAX889TESA
MAX889SESA
MAX889RESA
(-2.5V to -V
TOP VIEW
PART
IN
CAP+
CAP-
GND
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
)
IN
RANGE
1
2
4
TEMP.
3
Ordering Information
MAX889
SO
Pin Configuration
PACKAGE
8 SO
8 SO
8 SO
PIN-
6
8
7
5
AGND
FB
SHDN
OUT
Features
FREQUENCY
SWITCHING
2MHz
1MHz
0.5MHz
1

Related parts for MAX890LESA+T

MAX890LESA+T Summary of contents

Page 1

... FB OFF CAP+ MAX889 OUT CAP- AGND GND ________________________________________________________________ Maxim Integrated Products For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. High-Frequency, Regulated, 200mA, Inverting Charge Pump o 200mA Output Current 2MHz Switching Frequency . o Small Capacitors (1µ ...

Page 2

High-Frequency, Regulated, 200mA, Inverting Charge Pump ABSOLUTE MAXIMUM RATINGS IN to GND .................................................................-0.3V to +6V FB, SHDN, CAP+ to GND ............................-0. AGND to GND .......................................................-0.3V to +0.3V OUT to GND .............................................................-6V to +0.3V CAP- to GND ............................................(V Continuous ...

Page 3

ELECTRICAL CHARACTERISTICS ( +5V, capacitors from Table 1, T SHDN IN PARAMETER SYMBOL Supply Voltage Range Output Voltage Range I OUT(MAX)1 Maximum Output Current I OUT(MAX)2 Quiescent Supply I Q(FREE-RUN) Current (Free-Run Mode) Quiescent Supply I Q(REGULATED) ...

Page 4

High-Frequency, Regulated, 200mA, Inverting Charge Pump (Circuit of Figure +5V, capacitors from Table 1, T SHDN IN MAX889T OUTPUT RIPPLE vs. LOAD CURRENT vs. C OUT 2.2µF OUT ...

Page 5

PIN NAME 1 IN Power-Supply Positive Voltage Input 2 CAP+ Positive Terminal of Flying Capacitor 3 GND Power Ground 4 CAP- Negative Terminal of Flying Capacitor 5 OUT Inverting Charge-Pump Output Shutdown Control Input. Drive SHDN low to shut down ...

Page 6

High-Frequency, Regulated, 200mA, Inverting Charge Pump (ESR) of the flying and output capacitors. The typical output impedance is more accurately determined from the Typical Operating Characteristics. Current Limit and Soft-Start The MAX889 features a foldback current-limit/soft-start scheme that allows it ...

Page 7

Adjust the output voltage to a negative voltage from -2. with external resistors R1 and shown in Figures 1 and 4. FB servos to GND. Choose 100kΩ or less. Calculate R2 for ...

Page 8

... 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. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2000 Maxim Integrated Products ...

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