Microchip MIC5370/1 Manual

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Side 1/5

MIC5370/1 Evaluation Board

High Performance Dual 150mA LDO

1.6mm x1.6mm Thin MLF®

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

June 2009 M9999-061709-A

General Description

The MIC5370/1 is an advanced dual LDO ideal for

powering general purpose portable devices. The

MIC5370/1 provides two independently controlled, high

performance 150mA LDOs in a tiny 1.6mm x 1.6mm Thin

MLF® package. When the MIC5371 is disabled an internal

resistive load is automatically applied to the output to

discharge the output capacitor.

Ideal for battery powered applications, the MIC5370/1

offers low dropout voltage 155mV@150mA and low

ground current typically 32μA per LDO.

An input capacitor may be required when the power supply

is more than 4-inches from the device. The evaluation

board includes an input capacitor of 10μF to compensate

for long inductive test leads.

Requirements

The MIC5370/1 evaluation board requires an input power

supply that is able to deliver at least 350mA at a voltage

within the range of 2.5V to 5.5V. The output load can be

either active or passive.

Precautions

The evaluation board does not have reverse polarity

protection. Applying a negative voltage to the V IN terminal

may damage the device.

Getting Started

1. Connect an external supply to VIN. Apply the

desired input voltage to the VIN (J1) and ground

terminal (J2) of the evaluation board, paying

careful attention to polarity and supply voltage

(2.5V ≤ VIN ≤ 5.5V). An ammeter may be placed

between the input supply and the V IN terminal of

the evaluation board. Ensure that the supply

voltage is monitored at the VIN terminal. The

ammeter and power lead resistance can reduce

the voltage supplied to the input.

2. Enable/Disable the MIC5370/1. The evaluation

board is configured for “Default Disable” with

100KΩ pull down resistors on the enable pins to

GND. To enable the MIC5370/1 jumper the enable

terminal (J7 for LDO1 and J8 for LDO2) to VIN. To

disable the output, simply remove the jumper from

the EN terminal. The enable pin must be either

pulled high or low for proper operation. Removing

the pull down resistors and leaving the pins

floating will cause the regulators to operate in an

indeterminate state.

3. Connect the load to the VOUT terminals (J3 for

LDO1 and J5 for LDO2) and ground terminal

(J4). The load can be either a passive (resistor) or

active (electronic load). Be sure to monitor the

output voltage at the VOUT (J3, J5) terminals.

Micrel, Inc. MIC5370/1 Evaluation Board

June 2009 2 M9999-061709-A

Ordering Information

Part Number Description

MIC5370-SSYMT EV High Performance Dual 150mA LDO VOUT1 =3.3V, VOUT2 = 3.3V Evaluation Board

MIC5370-PPYMT EV High Performance Dual 150mA LDO VOUT1 =3.0V, VOUT2 = 3.0V Evaluation Board

MIC5370-MGYMT EV High Performance Dual 150mA LDO VOUT1 =2.8V, VOUT2 = 1.8V Evaluation Board

MIC5370-M4YMT EV High Performance Dual 150mA LDO VOUT1

=2.8V, VOUT2 = 1.2V Evaluation Board

MIC5370-G4YMT EV High Performance Dual 150mA LDO VOUT1

=1.8V, VOUT2 = 1.2V Evaluation Board

MIC5370-4CYMT EV High Performance Dual 150mA LDO VOUT1

=1.2V, VOUT2 = 1.0V Evaluation Board

MIC5371-SSYMT EV High Performance Dual 150mA LDO with auto discharge V

OUT1 =3.3V, VOUT2 = 3.3V Evaluation Board

MIC5371-PPYMT EV High Performance Dual 150mA LDO with auto discharge VOUT1 =3.0V, VOUT2 = 3.0V Evaluation Board

MIC5371-MGYMT EV High Performance Dual 150mA LDO with auto discharge V

OUT1 =2.8V, VOUT2 = 1.8V Evaluation Board

MIC5371-M4YMT EV High Performance Dual 150mA LDO with auto discharge V

OUT1 =2.8V, VOUT2 = 1.2V Evaluation Board

MIC5371-G4YMT EV High Performance Dual 150mA LDO with auto discharge V

OUT1 =1.8V, VOUT2 = 1.2V Evaluation Board

MIC5371-4CYMT EV High Performance Dual 150mA LDO with auto discharge

VOUT1 =1.2V, VOUT2 = 1.0V Evaluation Board

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	MIC5370/1

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