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EUP2618, EUP2621, EUP2624

Table of contents:
Info of EUP2618
Info of EUP2621
Info of EUP2624

EUP2618, EUP2621, EUP2624 Selling Leads, Datasheet

MFG:EUTECH Package Cooled:TSSOP-16 D/C:08+

EUP2618, EUP2621, EUP2624 Datasheet download

Five Points

Part Number: EUP2618

MFG: EUTECH

Package Cooled: TSSOP-16

D/C: 08+

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EUP2618 General Description

The EUP2618 triple-output DC-DC converter provides the regulated voltages required by active-matrix, thin-film transistor (TFT) liquid-crystal displays (LCDs). One high-power DC-DC converter and two low-power charge pumps convert the 3.3V to 5V input supply voltage into three independent output voltages.

The primary 1.2MHz DC-DC converter generates a boosted output voltage (VMAIN) up to 18V using ultra-small inductors and ceramic capacitors. The low-power control circuitry and the low on-resistance (0.2) of the integrated power MOSFET allows efficiency up to 92%.

The dual charge pumps independently regulate one positive output (VPOS) and one negative output (VNEG). These low-power outputs use external diode and capacitor stages to regulate output voltages up to 40V and down to -40V.

For EUP2618, the supply sequence is VMAIN first, VNEG next, and finally VPOS. The EUP2618 soft-starts each supply as soon as the previous supply finishes.

The EUP2618 are available in the ultra-thin TSSOP-16 package.

EUP2624 General Description

The EUP2624 is a high performance current mode, PWM step-up converter with pin selectable operating frequency. With an internal 2.1A, 170m MOSFET, it can generate 12V at up to 500mA output current from a 5V supply. The selectable 620kHz and 1.25MHz allows smaller inductors and faster transient response. An external compensation pin gives the user greater flexibility in setting loop compensation allowing the use of low ESR Ceramic output capacitors. Soft-start is controlled with an external capacitor, which determines the input current ramp rate during start-up.

When shut down, it draws<10A of current and can operate down to 2.5V input supply. These features along with 1.25MHz switching frequency makes it an ideal device for portable equipment and TFT-LCD displays.

The EUP2624 is available in an 8-pin MSOP package. The device is specified for operation over the full -40°C to +85°C temperature range.

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