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MAX1999EEI+

Voltage Regulators - Linear + Switching 200kHz ~ 500kHz Surface Mount -40Â°C ~ 85Â°C Tube Alternate Packaging MAX1999 28-QSOP Step-Down (Buck) Synchronous (2), Linear (LDO) (2) 4.5 V ~ 24 V

Product Category: Integrated Circuits (IC Chips)
Mfr. Part #
MAX1999EEI+
Manufacturer: Maxim Integrated
Package: 28-SSOP (0.154", 3.90mm Width)
Lead Free Status /RoHS Status:
Data Sheet: MAX1999EEI+ Datasheet
Inventory: In Stock

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Mfr. Part #: MAX1999EEI+

Specifications
Product Details

Specifications

Manufacturer Maxim Integrated

Product Category Voltage Regulators - Linear + Switching

Series MAX1999

Packaging Tube Alternate Packaging

Mounting-Style SMD/SMT

Package-Case 28-SSOP (0.154", 3.90mm Width)

Operating-Temperature -40Â°C ~ 85Â°C

Mounting-Type Surface Mount

Function Any Function

Voltage-Supply 4.5 V ~ 24 V

Supplier-Device-Package 28-QSOP

Number-of-Outputs 4 Outputs

Topology Step-Down (Buck) Synchronous (2), Linear (LDO) (2)

Frequency-Switching 200kHz ~ 500kHz

Voltage-Current-Output-1 Controller

Voltage-Current-Output-2 Controller

Voltage-Current-Output-3 3.3V, 100mA

w-LED-Driver No

w-Supervisor No

w-Sequencer Yes

Maximum Operating Temperature + 85 C

Operating temperature range - 40 C

Output-Voltage 2 V to 5.5 V

Input-Voltage 4.5 V to 24 V

Part-#-Aliases MAX1999

Package-Case QSOP-28

Product Details

General Description

The MAX1777/MAX1977/MAX1999 dual step-down, switch-mode power-supply (SMPS) controllers generate logic-supply voltages in battery-powered systems. The MAX1777/MAX1977/MAX1999 include two pulse-width modulation (PWM) controllers, adjustable from 2V to 5.5V or fixed at 5V and 3.3V. These devices feature two linear regulators providing 5V and 3.3V always-on outputs.

Features

â™¦ No Current-Sense Resistor Needed (MAX1999)
â™¦ Accurate Current Sense with Current-Sense
Resistor (MAX1777/MAX1977)
â™¦ 1.5% Output Voltage Accuracy
â™¦ 3.3V and 5V 100mA Bootstrapped Linear
Regulators
â™¦ Internal Soft-Start and Soft-Stop Output
Discharge
â™¦ Quick-PWM with 100ns Load Step Response
â™¦ 3.3V and 5V Fixed or Adjustable Outputs
(Dual Modeâ„¢)
â™¦ 4.5V to 24V Input Voltage Range
â™¦ Ultrasonic Pulse-Skipping Mode (25kHz min)
â™¦ Power-Good (PGOOD) Signal
â™¦ Overvoltage Protection Enable/Disable

Applications

Notebook and Subnotebook Computers
PDAs and Mobile Communication Devices
3- and 4-Cell Li+ Battery-Powered Devices

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Please send inquiry, we will respond immediately.

Mfr. Part #: MAX1999EEI+