MAX619CSA+ Maxim Integrated Products, MAX619CSA+ Datasheet

IC DC/DC CONV CHRG PUMP 5V 8SOIC

MAX619CSA+

Manufacturer Part Number
MAX619CSA+
Description
IC DC/DC CONV CHRG PUMP 5V 8SOIC
Manufacturer
Maxim Integrated Products
Type
Switched Capacitor (Charge Pump)r
Datasheet
1.MAX619CSA.pdf (7 pages)

Specifications of MAX619CSA+

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
50mA
Frequency - Switching
500kHz
Voltage - Input
2 ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Power - Output
471mW
Function
Step Up
Output Voltage
5 V
Output Current
50 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX619 step-up charge-pump DC-DC converter
delivers a regulated 5V ±4% output at 50mA over tem-
perature. The input voltage range is 2V to 3.6V (two
battery cells).
The complete MAX619 circuit fits into less than 0.1in
board space because it requires only four external
capacitors: two 0.22 F flying capacitors, and 10 F
capacitors at the input and output.
Low operating supply current (150 A max) and low
shutdown supply current (1 A max) make this device
ideal for small, portable, and battery-powered applica-
tions. When shut down, the load is disconnected from
the input.
The MAX619 is available in 8-pin DIP and SO packages.
________________________Applications
19-0227; Rev 2; 5/96
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
__________________Pin Configuration
_______________General Description
TOP VIEW
Two Battery Cells to 5V Conversion
Local 3V-to-5V Conversion
Portable Instruments & Handy-Terminals
Battery-Powered Microprocessor-Based Systems
5V Flash Memory Programmer
Minimum Component DC-DC Converters
Remote Data-Acquisition Systems
Compact 5V Op-Amp Supply
Regulated 5V Supply from Lithium Backup Battery
Switching Drive Voltage for MOSFETs in
Low-Voltage Systems
OUT
C1+
C2+
IN
________________________________________________________________ Maxim Integrated Products
1
2
3
4
MAX619
DIP/SO
8
7
6
5
C1-
SHDN
GND
C2-
Regulated 5V Charge-Pump
2
of
____________________________Features
_______________Ordering Information
* Dice are specified at T
__________Typical Operating Circuit
MAX619CPA
MAX619CSA
MAX619C/D
MAX619EPA
MAX619ESA
MAX619MJA
Regulated 5V ±4% Charge Pump
Output Current Guaranteed over Temperature
2V to 3.6V Input Range
No Inductors; Very Low EMI Noise
Ultra-Small Application Circuit (0.1in
Uses Small, Inexpensive Capacitors
500kHz Internal Oscillator
Logic-Controlled 1 A Max Shutdown
Supply Current
Shutdown Disconnects Load from Input
8-Pin DIP and SO Packages
20mA (V
50mA (V
PART
2V to 3.6V
INPUT
0.22 F
ON/OFF
10 F
IN
IN
DC-DC Converter
≥ 2V)
≥ 3V)
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
A
IN
C1+
C1-
SHDN
= +25 °C.
MAX619
GND
OUT
C2+
C2-
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP
10 F
2
0.22 F
)
5V, 20mA
OUTPUT
1

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MAX619CSA+ Summary of contents

Page 1

... C1 MAX619 OUT DIP/SO ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 Regulated 5V Charge-Pump DC-DC Converter ____________________________Features Regulated 5V ±4% Charge Pump Output Current Guaranteed over Temperature 20mA (V IN 50mA ( 3.6V Input Range No Inductors; Very Low EMI Noise Ultra-Small Application Circuit (0 ...

Page 2

Regulated 5V Charge-Pump DC-DC Converter ABSOLUTE MAXIMUM RATINGS V to GND ............................................................-0.3V to +5. GND .........................................................-0.3V to +5.5V OUT SHDN to GND ..............................................-0. Continuous (Note 1)..................................................120mA OUT Continuous Power Dissipation (T = +70°C) A ...

Page 3

Operating Characteristics (T = +25°C, unless otherwise noted.) A EFFICIENCY vs. OUTPUT CURRENT AND INPUT VOLTAGE 3.6V ...

Page 4

Regulated 5V Charge-Pump DC-DC Converter _____________________Pin Description PIN NAME FUNCTION 1 C1+ Positive Terminal for Input Supply Voltage +5V Output Voltage when in OUT 3 OUT shutdown mode. 4 C2+ Positive Terminal for C2 ...

Page 5

IN C3 10µF * S1A C2+ S2A C2 0.22µF S1B C2- C1+ S2B S1C C1 0.22µF S2C C1- S1D * SWITCHES SHOWN IN TRIPLER MODE, DISCHARGE CYCLE Figure 1. Block Diagram ________________________________________________________________________________________ Regulated 5V Charge-Pump DC-DC Converter P IC POWER ...

Page 6

Regulated 5V Charge-Pump DC-DC Converter __________Applications Information Capacitor Selection Charge-Pump Capacitors C1 and C2 The values of charge-pump capacitors C1 and C2 are critical to ensure adequate output current and avoid excessive peak currents. Use values in the range of ...

Page 7

Layout Considerations The MAX619’s high oscillator frequency makes good layout important. A good layout ensures stability and helps maintain the output voltage under heavy loads. For best performance, use very short connections to the capacitors. Paralleling Devices Two MAX619s can ...

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