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Datasheet MAX1852, MAX1853 (Maxim)

ПроизводительMaxim
ОписаниеSC70 Inverting Charge Pump with Shutdown
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SC70 Inverting Charge Pumps. with Shutdown. MAX1852/MAX1853. General Description. Features. 30mA Output Current. Low 15

Datasheet MAX1852, MAX1853 Maxim

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19-1792; Rev 0; 9/00
SC70 Inverting Charge Pumps with Shutdown MAX1852/MAX1853 General Description Features
The MAX1852/MAX1853 monolithic, CMOS charge- ♦
30mA Output Current
pump voltage inverters in the ultra-small SC70 package feature a low 15Ω output resistance, permitting loads ♦
Low 15

Output Resistance
up to 30mA with maximum efficiency. The MAX1852/ ♦
68µA Supply Current (MAX1852)
MAX1853 are available with operating frequencies of 50kHz and 200kHz, respectively, allowing optimization ♦
Requires Only Two 0.68µF Capacitors (MAX1853)
of supply current or external component size. Small ♦
+2.5V to +5.5V Input Voltage Range
external components and micropower shutdown mode make these devices ideal for both battery-powered and ♦
0.1µA Logic-Controlled Shutdown
board-level voltage conversion applications. ♦
Two Switching Frequencies
Oscillator control circuitry and four power-MOSFET
50kHz (MAX1852)
switches are included on-chip. Applications include
200kHz (MAX1853)
generating a negative supply from a +5V or +3.3V logic supply to power analog circuitry. Both versions come in ♦
Slew-Rate Limited to Reduce EMI
a 6-pin SC70 package that is 40% smaller than a ♦
Ultra-Small 6-Pin SC70 Package
SOT23.
Applications
Negative Supply from +5V or +3.3V Logic Supplies Small LCD Panels
Ordering Information
GaAsFET Bias Supplies
TEMP. PIN - TOP
Handy-Terminals, PDAs
PART RANGE PA C K A G E MARK
Battery-Operated Equipment
MAX1852
EXT - 40°C to + 85°C 6 SC70 AAL
MAX1853
EXT - 40°C to + 85°C 6 SC70 AAM
Typical Operating Circuit Pin Configuration
0.68µF TOP VIEW C1+ C1- INPUT NEGATIVE OUT 1 6 C1+ 2.5V TO 5.5V OUTPUT IN OUT -1 ✕

VIN 30mA MAX1852 GND 2 5 C1- MAX1853 MAX1853 0.68µF ON SHDN SHDN 3 4 IN OFF GND
SC70-6 ________________________________________________________________ Maxim Integrated Products 1 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.
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