MAX889

High-Frequency, Regulated, 200mA, Inverting Charge Pump

Regulated Inverting Charge Pump Delivers 200mA for Negative Supply without Inductors


Please check latest availability status for a specific part variant.

Description

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 -VIN.

The MAX889 is available with an operating frequency of 2MHz (T version), 1MHz (S version), or 0.5MHz (R version). The higher switching frequency devices allow the use of smaller capacitors for space-limited applications. The lower frequency devices have lower quiescent current.

The MAX889 also features a 0.1µA logic-controlled shutdown mode and is available in an 8-pin SO package. An evaluation kit, MAX889SEVKIT, is available.
MAX889: Typical Operating Circuit MAX889: Typical Operating Circuit Enlarge+

Key Features

  • 200mA Output Current
  • Up to 2MHz Switching Frequency
  • Small Capacitors (1µF)
  • +2.7V to +5.5V Input Voltage Range
  • Adjustable Regulated Negative Output (-2.5V to -VIN)
  • 0.1µA Logic-Controlled Shutdown
  • Low 0.05Ω Output Resistance (in regulation)
  • Soft-Start and Foldback Current Limited
  • Short-Circuit and Thermal Shutdown Protected
  • 8-Pin SO Package

Applications/Uses

  • Battery-Powered Applications
  • Camcorders
  • Digital Still Cameras
  • Hard Disk Drive
  • Measurement Instrumentation
  • TFT Panels
Part NumberTopologyVIN
(V)
VIN
(V)
ICC
(mA)
Unadj. VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
IOUT
(A)
Oper. Freq.
(kHz)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxmaxminmaxtypSee Notes
MAX889R 
Inverter
Regulated
2.75.57-VIN-VIN-2.50.2500-40 to +85
SOIC(N)/8
$2.22 @1k
MAX889S 121000
SOIC(N)/8
MAX889T 222000
SOIC(N)/8
See All Charge Pumps (45)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX889SEVKIT: Evaluation Kit for the MAX889S
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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