MAX868EUB+ by Analog Devices

Regulated, Adjustable -2x Inverting Charge Pump


The MAX868 inverting charge pump provides a low-cost and compact means of generating a regulated negative voltage up to -2 x VIN from a positive input voltage between 1.8V and 5.5V. It uses a pulse-frequency-modulation (PFM) control scheme to generate the regulated negative output voltage. PFM operation is obtained by gating the internal 450kHz oscillator on and off as needed to maintain output voltage regulation. This unique on-demand switching scheme gives the MAX868 excellent light-load efficiency without degrading its full-load operation (up to 30mA), permitting smaller capacitors to take advantage of the oscillator's high switching frequency. The MAX868 requires no inductors; only four capacitors are required to build a complete DC-DC converter. Output voltage regulation is achieved by adding just two resistors. The MAX868 comes in a 10-pin µMAX® package, which is only 1.11mm high and occupies just half the board area of a standard 8-pin SO.

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Prices starting from US$1.70

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Features

Regulated Negative Output Voltage (up to -2 x VIN)
Ultra-Small, 10-Pin µMAX Package
On-Demand Switching at up to 450kHz
30µA Quiescent Supply Current
Requires Only Four Small External Capacitors
1.8V to 5.5V Input Voltage Range
0.1µA Logic-Controlled Shutdown
Up to 30mA Output Current
Adjustable output voltage

Specifications

Topology InverterRegulated
VIN (V) (min) 1.8
VIN (V) (max) 5.5
IOUT (A) (typ) 0.03
Unadj. VOUT (V) -2xVIN
Adj. VOUT (V) (min) -2xVIN
Adj. VOUT (V) (max) 0
IQ (mA) (max) 0.05
Switching Frequency (kHz) 450
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/10
BudgetaryPrice (See Notes) 1.63


MAX868EUB+ Semiconductors - ICs by Analog Devices

IC V REG ADJ SMD µMAX-10 868

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Output Type Adjustable
Input Voltage Min 1.8V
Input Voltage Max 5.5V
DC / DC Converter IC Case µMAX
No. of Pins 10Pins
Output Current 30mA
Fixed Output Voltage Nom. -
Adjustable Output Voltage Min -11V
Adjustable Output Voltage Max -3.6V
Topology Doubler Inverting
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 868
Frequency 450kHz
Logic Function Number 868
No. of Outputs 1Outputs
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +85°C
Output Current Max 30A
Output Voltage -11V
Output Voltage Max -3.6V
Output Voltage Min -11V
Primary Input Voltage 5.5V
Supply Voltage Min 1.8V

Alternative Descriptions

Regulated, Adjustable -2x Inve | Analog Devices
Dc-Dc Charge Pump, Invert, 85Deg C | Newark Electronics
IC, V REG ADJ, SMD, µMAX-10, 868 | element14
CHARGE PUMP INV -3.6V TO -11V 30MA | RS

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX868EUB+ ?

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Is the MAX868EUB+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX868EUB+ have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14, Farnell and RS have stock available or on a lead time for MAX868EUB+ .

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