Microchip MIC5370/1 Handleiding

Microchip Niet gecategoriseerd MIC5370/1

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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 32ÎĽA 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 10ÎĽF 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
Micrel, Inc. MIC5370/1 Evaluation Board
June 2009 3 M9999-061709-A
Evaluation Board Schematic
U1
MIC5370/1-xxYMT
VIN
EN1
C3
1µF/10V
VOUT1
VOUT2
GND
EN2
J1
VIN
J7
EN1
J2
GND
C1
1µF/10V
C2
1µF/10V
J3
VOUT1
J5
VOUT2
J8
EN2
J4
GND
J6
GND
1
4
6
5
3
2
R1
100k
R1
100k
Bill of Materials
Item Part Number Manufacturer Description Qty.
C1 C1608X5R0J106K TDK(2) Capacitor, 10µF Ceramic, 6.3V, X5R, Size 0603 1
C2, C3 GRM188R60J225KE19D Murata(1) Capacitor, 1µF Ceramic, 10V, X5R, Size 0402 2
R1, R2 CRCW04021003KFKEA Vishay(3) Resistor, 100KΩ,1/16W, Size 0402 2
MIC5370-XXYMT Micrel(4) Dual, 150mA LDO, 1.6mm x 1.6mm Thin MLF®
U1
MIC5371-XXYMT Micrel(4)
Dual, 150mA LDO with auto discharge, 1.6mm x
1.6mm Thin MLF®
1
Notes:
1. Murata: www.murata.com
2. TDK: www.tdk.com
3. Vishay: www.vishay.com
4. Micrel, Inc.: www.micrel.com

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: MIC5370/1

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