MAX1697:60mA, SOT23 Inverting Charge Pump with Shutdown

EMI-Friendly Ultra-Small Charge Pump

The MAX1697 ultra-small, monolithic, CMOS charge-pump voltage inverter accepts an input voltage ranging from +1.25V to +5.5V. This device features an ultra-low 12Ω output resistance, permitting loads of up to 60mA with maximum efficiency. The MAX1697 is available with operating frequencies of 12kHz, 35kHz, 125kHz, or 250kHz, allowing optimization of supply current or external component size. Its small external components and micropower shutdown mode make this device 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. All versions come in a 6-pin SOT23 package and deliver 60mA. For applications with lower current requirements, the MAX1719/MAX1720/MAX1721 are pin-compatible SOT23 charge pumps that supply up to 25mA.

Key Features
  • 60mA Output Current
  • Low 12Ω Output Resistance
  • 150µA Supply Current (MAX1697R)
  • Requires Only Two 1µF Capacitors (MAX1697U)
  • Start-Up Current Limited
  • +1.25V to +5.5V Input Voltage Range
  • Slew-Rate Limited to Reduce EMI
MAX1697: Typical Operating Circuit
MAX1697: Typical Operating Circuit
Applications/Uses
  • Battery-Operated Equipment
  • GaAsFET Bias Supplies
  • Handy-Terminals, PDAs
  • Negative Supply from +5V or +3.3V Logic Supplies
  • Small LCD Panels
DataSheet
titleDownload file
MAX1697 Data SheetMAX1697.pdf
Parametrics
Part NumberTopologyVIN
(V)
VIN
(V)
ICC
(mA)
Unadj. VOUT
(V)
IOUT
(A)
Oper. Freq.
(kHz)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxmaxtypSee Notes
MAX1697Inverter
Unregulated
1.255.50.3-VIN0.06250-40 to +85SOT/6$0.99 @1k
Quality and Environmental Data
Related Products
  • MAX1719:SOT23, Switched-Capacitor Voltage Inverters with Shutdown
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1697REUT#G16ActiveSOT,;6 pin;9 mm²-40°C to +85°C
MAX1697REUT#TG16ActiveSOT,;6 pin;9 mm²-40°C to +85°C
MAX1697REUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX1697REUT-TNo Longer AvailableMAX1697REUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX1697SEUTNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX1697SEUT#G16ActiveSOT,;6 pin;9 mm²-40°C to +85°C
MAX1697SEUT#TG16ActiveSOT,;6 pin;9 mm²-40°C to +85°C
MAX1697SEUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX1697SEUT-TNo Longer AvailableMAX1697SEUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX1697TEUTNo Longer AvailableMAX1697TEUT+SOT,;6 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1697TEUT#TG16No Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°C
MAX1697TEUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX1697TEUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX1697TEUT-TNo Longer AvailableMAX1697TEUT+SOT,;6 pin;9 mm²-40°C to +85°CNo
MAX1697TEUT/V#TG16No Longer AvailableSOT;-40°C to +85°CSee data sheet
MAX1697UEUT#G16ActiveSOT,;6 pin;9 mm²-40°C to +85°C
MAX1697UEUT#TG16ActiveSOT,;6 pin;9 mm²-40°C to +85°C
MAX1697UEUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX1697UEUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX1697UEUT-TNo Longer AvailableMAX1697UEUT+SOT,;6 pin;9 mm²-40°C to +85°CNo
MAX1697.pdf MAX1697
MAX1697.pdf MAX1697
MAX1697.pdf MAX1697
Square-wave Oscillator Includes No External Components MAX1697
Simple Circuit Disconnects Load from Low-Voltage Supply MAX6327
Simple Circuit Disconnects Load from Low-Voltage Supply MAX6327
Properties of the Charge-Pump Voltage Splitter MAX1697
MAX1697.pdf MAX1697
MAX1697.pdf MAX1697