MAX1853EXT+T Maxim Integrated Products, MAX1853EXT+T Datasheet

IC CHARGE PUMP INV SC70-6

MAX1853EXT+T

Manufacturer Part Number
MAX1853EXT+T
Description
IC CHARGE PUMP INV SC70-6
Manufacturer
Maxim Integrated Products
Type
Switched Capacitor (Charge Pump), Invertingr
Datasheet

Specifications of MAX1853EXT+T

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
-2.5 ~ -5.5 V
Current - Output
30mA
Frequency - Switching
200kHz
Voltage - Input
2.5 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-70-6, SC-88, SOT-363
Power - Output
245mW
Package
6SC-70
Function
Inverting
Output Voltage
-2.5 to -5.5 V
Output Current
30(Max) mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX1852/MAX1853 monolithic, CMOS charge-
pump voltage inverters in the ultra-small SC70 package
feature a low 15Ω output resistance, permitting loads
up to 30mA with maximum efficiency. The MAX1852/
MAX1853 are available with operating frequencies of
50kHz and 200kHz, respectively, allowing optimization
of supply current or external component size. Small
external components and micropower shutdown mode
make these devices ideal for both battery-powered and
board-level voltage conversion applications.
Oscillator control circuitry and four power-MOSFET
switches are included on-chip. Applications include
generating a negative supply from a +5V or +3.3V logic
supply to power analog circuitry. Both versions come in
a 6-pin SC70 package that is 40% smaller than a
SOT23.
19-1792; Rev 0; 9/00
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.
Negative Supply from +5V or +3.3V Logic Supplies
Small LCD Panels
GaAsFET Bias Supplies
Handy-Terminals, PDAs
Battery-Operated Equipment
ON
2.5V TO 5.5V
INPUT
OFF
Typical Operating Circuit
IN
SHDN
________________________________________________________________ Maxim Integrated Products
C1+
MAX1853
General Description
0.68µF
GND
C1-
OUT
Applications
SC70 Inverting Charge Pumps
0.68µF
NEGATIVE
OUTPUT
-1
30mA
V
IN
o 30mA Output Current
o Low 15Ω Output Resistance
o 68µA Supply Current (MAX1852)
o Requires Only Two 0.68µF Capacitors (MAX1853)
o +2.5V to +5.5V Input Voltage Range
o 0.1µA Logic-Controlled Shutdown
o Two Switching Frequencies
o Slew-Rate Limited to Reduce EMI
o Ultra-Small 6-Pin SC70 Package
MAX1852EXT
MAX1853EXT
50kHz (MAX1852)
200kHz (MAX1853)
PART
TOP VIEW
SHDN
GND
OUT
with Shutdown
- 40°C to + 85°C
- 40°C to + 85°C
RANGE
Ordering Information
TEMP.
1
2
3
MAX1852
MAX1853
SC70-6
Pin Configuration
6 SC70
6 SC70
PIN -
PA C K A G E
6
5
4
C1-
IN
C1+
Features
MARK
AAM
TOP
AAL
1

Related parts for MAX1853EXT+T

MAX1853EXT+T Summary of contents

Page 1

... TO 5.5V IN MAX1853 SHDN ON OFF 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. SC70 Inverting Charge Pumps o 30mA Output Current o Low 15Ω Output Resistance o 68µA Supply Current (MAX1852) o Requires Only Two 0.68µ ...

Page 2

SC70 Inverting Charge Pumps with Shutdown ABSOLUTE MAXIMUM RATINGS IN to GND .................................................................-0.3V to +6V C1+, SHDN to GND .....................................-0. C1- to GND...............................................(V OUT to GND .............................................................+0.3V to -6V OUT Short-Circuit to GND ..............................................1 minute Stresses beyond those ...

Page 3

Figure 1, capacitors from Table 2, V MAX1852 OUTPUT VOLTAGE vs. LOAD CURRENT -2.0 -2 +3.3V IN -3.0 -3.5 -4 +5V IN -4.5 -5.0 -5 LOAD CURRENT (mA) ...

Page 4

SC70 Inverting Charge Pumps with Shutdown (Circuit of Figure 1, capacitors from Table 2, V MAX1852 CHARGE-PUMP FREQUENCY vs. TEMPERATURE -40 - TEMPERATURE (°C) ...

Page 5

Pin Description PIN NAME FUNCTION 1 OUT Inverting Charge-Pump Output 2 GND Ground Shutdown Input. Drive this pin high SHDN 3 for normal operation; drive it low for shutdown mode. Power-Supply Voltage Input. Input 4 IN range is +2.5V to ...

Page 6

SC70 Inverting Charge Pumps with Shutdown Figure 2. Ideal Voltage Inverter f OSC Figure 3a. Switched-Capacitor Model I OUT + × RIPPLE OUT 2(f )C2 OSC Input ...

Page 7

Table 1. Low-ESR Capacitor Manufacturers PRODUCTION MANUFACTURER METHOD AVX Surface-Mount Matsuo Tantalum Sprague AVX Surface-Mount Ceramic Matsuo Table 2. Capacitor Selection to Minimize Output Resistance FREQUENCY CAPACITOR PART (kHz) MAX1852 50 MAX1853 200 … MAX1852 ...

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 Printed USA is a registered trademark of Maxim Integrated Products ...

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