MIC23150-4YMT EV Micrel, MIC23150-4YMT EV Datasheet

MIC23150-4YMT EV

Manufacturer Part Number

MIC23150-4YMT EV

Description

Power Management IC Development Tools 2.0A 4MHz HyperLight Load Buck Regulator - Evaluation Board

Manufacturer

Micrel

Type

DC/DC Converters, Regulators & Controllersr

Datasheet

1.MIC23153-GYMT_EV.pdf (5 pages)

Specifications of MIC23150-4YMT EV

Product

Evaluation Boards

Tool Is For Evaluation Of

MIC23150

Input Voltage

2.7 V to 5.5 V

Output Voltage

1.2 V

Description/function

Evaluation Board

Maximum Operating Temperature

+ 125 C

Minimum Operating Temperature

- 40 C

Output Current

120 mA

For Use With

MIC23150

Current page: 1 of 5
Download datasheet (216Kb)

General Description

The MIC23150 is a 2A 4MHz switching regulator featuring

HyperLight Load™ mode. The MIC23150 is highly efficient

throughout the entire output current range, drawing just

23µA of quiescent current in operation. The tiny 2mm x

2mm MLF

switching frequency, enables a compact sub-1mm height

solution with only three external components. The

MIC23150 provides accurate output voltage regulation

under the most demanding conditions and responds

extremely quickly to a load transient with exceptionally

small output voltage ripple.

Factoring in the output current, the internal circuitry of the

MIC23150 automatically selects between two modes of

operation for optimum efficiency. Under light load

conditions, the MIC23150 goes into HyperLight Load™

mode. HyperLight Load™ uses a Pulse-Frequency

Modulation (PFM) control scheme that controls the off time

at light load. This proprietary architecture reduces the

amount of switching needed at light load, thereby

increasing operating efficiency. The MIC23150 attains up

to 87% efficiency at 1mA output load. As the load current

increases beyond approximately 100mA, the device

operates using the Pulse-Width Modulation (PWM) method

for up to 93% efficiency at higher load. The two modes of

operation ensure the highest efficiency across the entire

load range.

The MIC23150 operates from an input voltage range of

2.7V to 5.5V and features internal power MOSFETs that

deliver up to 2A of output current. This step-down regulator

provides an output voltage accuracy of +/-2.5% across the

junction temperature range of -40ºC to +125ºC. The

MIC23150 is available in fixed output versions supporting

an output voltage as low as 1.0V.

Requirements

The MIC23150 evaluation board requires an input power

source that is able to deliver greater than 2A at 2.7V to the

MIC23150. The output load can either be an active

(electronic) or passive (resistive) load.

HyperLight Load is a trademark of Micrel, Inc. MLF is a registered trademark of Amkor Technology.

August 2009

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

package, in combination with the 4MHz

Getting Started

Output Voltage

The MIC23150 evaluation board is available with the

following output voltage options listed below:

Ordering Information

Note:

1. Contact Micrel Marketing

2. Other voltage options available on request. Contact Micrel.

408

MIC23150-CYMT EV

MIC23150-4YMT EV

MIC23150-GYMT EV

MIC23150-SYMT EV

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

1. Connect an external supply to the V

2. Connect a load to the V

3. Enable the MIC23150. The MIC23150 evaluation

MIC23150 Evaluation Board

Part Number

terminal. Apply the desired input voltage to V

(J1) and ground (J2) terminals of the evaluation

board, paying careful attention to polarity and

supply voltage (2.7V ≤ V

may be placed between the input supply and the

voltage at the V

and/or power lead resistance can reduce the

voltage supplied to the device.

terminal (J4). The load can be either passive

(resistive) or active (electronic load). An ammeter

may be placed between the load and the output

terminal. Ensure the output voltage is monitored at

the V

board has a pull-up resistor to V

device, apply a voltage below 0.5V to the EN (J5)

terminal. In the absence of the pull-up resistor, the

device is enabled by applying a voltage greater

than 1.2V to the EN (J5) terminal. The enable pin

must be either pulled high or low for proper

operation. Removing the pull-up resistor and

leaving the pin floating will cause the regulator to

operate in an unknown state.

4MHz 2A Buck Regulator with

(J1) terminal. Be sure to monitor the supply

OUT

HyperLight Load™

(J3) terminal.

(1)

1.0V Fixed Output Evaluation Board

1.2V Fixed Output Evaluation Board

1.8V Fixed Output Evaluation Board

3.3V Fixed Output Evaluation Board

(J1) terminal, since the ammeter

Description

OUT

≤ 5.5V). An ammeter

(J3) and ground

M9999-081709-A

. To disable the

(2)

(J1)

Related parts for MIC23150-4YMT EV

MIC23150-4YMT EV Summary of contents

Page 1

... The MIC23150 evaluation board is available with the following output voltage options listed below: Ordering Information Part Number (1) MIC23150-CYMT EV 1.0V Fixed Output Evaluation Board (1) MIC23150-4YMT EV 1.2V Fixed Output Evaluation Board MIC23150-GYMT EV 1.8V Fixed Output Evaluation Board MIC23150-SYMT EV 3.3V Fixed Output Evaluation Board Note: 1. Contact Micrel Marketing 2 ...

Page 2

... Micrel, Inc. HyperLight Load™ Mode MIC23150 uses a minimum on and off time proprietary control loop (patented by Micrel). When the output voltage falls below the regulation threshold, the error comparator begins a switching cycle that turns the PMOS on and keeps it on for the duration of the minimum-on-time. This increases the output voltage ...

Page 3

... Micrel, Inc. MIC23150 Typical Application Circuit Bill of Materials Item Part Number C1, C2 C1608X5R0J475K R1 CRCW06031002K0FKEA VLS3010T-1R0N1R9 L1 VLS4012T-1R0N1R6 DO2010-102ML U1 MIC23150-xYMT Notes: 1. TDK: www.tdk.com. 2. Vishay: www.vishay.com. 3. Coilcraft: www.coilcraft.com. 4. Micrel, Inc.: www.micrel.com. August 2009 Manufacturer Description (1) TDK 4.7µF Ceramic Capacitor, 6.3V, X5R, Size 0603 (2) Vishay 10kΩ, 1%, Size 0603 ...

Page 4

... Micrel, Inc. PCB Layout Recommendations August 2009 Top Layer Bottom Layer 4 MIC23150 Evaluation Board M9999-081709-A ...

Page 5

... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully August 2009 indemnify Micrel for any damages resulting from such use or sale. © 2009 Micrel, Incorporated. 5 MIC23150 Evaluation Board M9999-081709-A ...

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