MIC33153-4YHJ TR Micrel Inc, MIC33153-4YHJ TR Datasheet

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MIC33153-4YHJ TR

Manufacturer Part Number
MIC33153-4YHJ TR
Description
IC BUCK SYNC 1.2V 1.2A 14MLF
Manufacturer
Micrel Inc
Series
HyperLight Load™r
Type
Step-Down (Buck), PFM/PWMr
Datasheet

Specifications of MIC33153-4YHJ TR

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
1.2V
Current - Output
1.2A
Frequency - Switching
4MHz
Voltage - Input
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
14-VFDFN Exposed Pad, 14-MLF®
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
576-3903-2
General Description
The
synchronous buck regulator with an internal inductor,
HyperLight Load™ mode, Power Good (PG) output
indicator, and programmable soft start. HyperLight Load™
provides very high efficiency at light loads and ultra-fast
transient response which makes the MIC33153 perfectly
suited for supplying processor core voltages. An additional
benefit of this proprietary architecture is very low output
ripple voltage throughout the entire load range with the use
of small output capacitors.
The MIC33153 is designed so that only two external
capacitors as small as 2.2µF are needed for stability. This
gives the MIC33153 the ease of use of an LDO with the
efficiency of a HyperLight Load™ DC converter. The
MIC33153 achieves efficiency in HyperLight Load
as high as 85% at 1mA, with a very low quiescent current
of 22µA. At higher loads, the MIC33153 provides a
constant switching frequency up to 4MHz.
The MIC33153 is available in 14-pin 3.0mm x 3.5mm
MLF
range from –40°C to +125°C.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
____________________________________________________________________________________________________________
Typical Application
HyperLight Load is a trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademark Amkor Technology Inc.
September 2010
®
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
MIC33153
package with an operating junction temperature
is
Fixed Output Voltage
a
high-efficiency
4MHz
TM
mode
1.2A
408
Features
• Internal inductor
• Input voltage: 2.7V to 5.5V
• Output voltage: fixed or adjustable (0.62V to 3.6V)
• Up to 1.2 A output current
• Up to 93% peak efficiency
• 85% typical efficiency at 1mA
• Power Good (PG) output
• Programmable soft start
• 22µA typical quiescent current
• 4MHz PWM operation in continuous mode
• Ultra-fast transient response
• Low ripple output voltage
• 0.01µA shutdown current
• Thermal shutdown and current limit protection
• 14-pin 3.0 x 3.5 x 1.1mm MLF
• –40°C to +125°C junction temperature range
Applications
• Solid State Drives (SSD)
• Mobile handsets
• Portable media/MP3 players
• Portable navigation devices (GPS)
• WiFi/WiMax/WiBro modules
• Wireless LAN cards
• Portable applications
Buck Regulator with HyperLight Load™
− Simplifies design to two external capacitors
− 35mVpp ripple in HyperLight Load
− 7mV output voltage ripple in full PWM mode
) 944-01200 • fax + 1 (408) 474-1000 •
4MHz PWM 1.2A Internal Inductor
Adjustable Output Voltage
and Power Good
MIC33153
®
package
http://www.micrel.com
mode
M9999-092910-A

Related parts for MIC33153-4YHJ TR

MIC33153-4YHJ TR Summary of contents

Page 1

... The MIC33153 is designed so that only two external capacitors as small as 2.2µF are needed for stability. This gives the MIC33153 the ease of use of an LDO with the efficiency of a HyperLight Load™ DC converter. The MIC33153 achieves efficiency in HyperLight Load as high as 85% at 1mA, with a very low quiescent current of 22µ ...

Page 2

... Not Internally Connected. Feedback: Connect a resistor divider from the output to ground to set the output voltage Package 14-pin 3.0 x 3.5 x 1.1mm MLF 14-pin 3.0 x 3.5 x 1.1mm MLF ® 14- Pin 3.0mm x 3.5mm MLF (HJ) Adjustable Output Voltage (Top View) is required. SS MIC33153 ® ® M9999-092910-A ...

Page 3

... LOAD 0.3 = 20mA LOAD < 2.5V 0.8 ≥ 2.5V 0.85 0.2 0.19 4 320 2 0.9 0.5 0.1 160 20 MIC33153 IN ≤ +125°C J Max. Units V 5.5 V 2.65 mV µA 45 µA 5 +2.5 % 0.6355 V A %/V %/A Ω MHz µs µ µ ...

Page 4

... OUTNOM C = 4.7µF 1.860 OUT I = 300mA 1.840 OUT 1.820 1.800 1.780 1.760 I = 1000mA 1.740 OUT I = 500mA OUT 1.720 1.700 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 4 MIC33153 Efficiency (V = 1.8V) OUT 100 4.7µF OUT 100 1000 10000 OUTPUT CURRENT (mA) Efficiency ( ...

Page 5

... TEMPERATURE (°C) V Rise Time OUT vs 1000000 100000 10000 1000 100 10 1 100 1000 10000 100000 1000000 CSS (pF) 5 MIC33153 Enable Threshold vs. Temperature 2 1.8 1.6 1.4 Turn ON 1.2 1 0.8 0.6 0.4 Turn OFF 0 3.6V OUT 0 -40 - 100 120 TEMPERATURE (%) SW Frequency vs ...

Page 6

... Micrel Inc. Functional Characteristics September 2010 6 MIC33153 M9999-092910-A ...

Page 7

... Micrel Inc. Functional Characteristics (Continued) September 2010 7 MIC33153 M9999-092910-A ...

Page 8

... Micrel Inc. Functional Characteristics (Continued) September 2010 8 MIC33153 M9999-092910-A ...

Page 9

... Micrel Inc. Functional Diagram Figure 1. Simplified MIC33153 Functional Block Diagram – Fixed Output Voltage Figure 2. Simplified MIC33153 Functional Block Diagram – Adjustable Output Voltage September 2010 9 MIC33153 M9999-092910-A ...

Page 10

... A logic high signal on the enable pin activates the output voltage of the device. A logic low signal on the enable pin deactivates the output and reduces supply current to 0.01µA. MIC33153 features external soft start circuitry via the soft start (SS) pin that reduces in rush current and prevents the output voltage from overshooting at start up ...

Page 11

... This reduces their ability to filter out high frequency noise. Output Capacitor The MIC33153 is designed for use with a 2.2µF or greater ceramic output capacitor. Increasing the output capacitance will lower output ripple and improve load transient response but could also increase solution size or cost ...

Page 12

... As the load current increases, the MIC33153 goes into continuous conduction mode (CCM) and switches at a frequency centered at 4MHz. The equation to calculate the load when the MIC33153 goes into continuous conduction mode may be approximated by the following formula: As shown in the above equation, the load at which MIC33153 transitions from HyperLight Load™ ...

Page 13

... Rθ if one of the datasheet. X and Example: A MIC33153 is intended to drive a 1A load at 1.8V and is placed on a printed circuit board which has a ground ) + V plane area of at least 25mm square. The voltage source Li-ion battery with a lower operating threshold of 3V and the ambient temperature of the assembly can be up ...

Page 14

... TDK Ceramic Capacitor, 4.7µF, 6.3V, X5R, Size 0603 (2) Murata (1) TDK Ceramic Capacitor, 470pF, 6.3V, NPO, Size 0603 (3) Vishay Resistor, 10k, Size 0603 4MHz 1.2A Buck Regulator with HyperLight Load™ Mode (4) Micrel, Inc. and Fixed Output Voltage 14 MIC33153 Qty M9999-092910-A ...

Page 15

... Ceramic Capacitor, 470pF, 6.3V, NPO, Size 0603 − Not Fitted (NF) (3) Vishay Resistor, 301k, Size 0603 (3) Vishay Resistor, 158k, Size 0603 (3) Vishay Resistor, 10k, Size 0603 4MHz 1.2A Buck Regulator with HyperLight Load™ Mode (4) Micrel, Inc. and Adjustable Output Voltage 15 MIC33153 Qty M9999-092910-A ...

Page 16

... Micrel Inc. PCB Layout Recommendations September 2010 Top Layer Bottom Layer 16 MIC33153 M9999-092910-A ...

Page 17

... 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 September 2010 14-Pin 3.0mm x 3.5mm MLF indemnify Micrel for any damages resulting from such use or sale. © 2010 Micrel, Incorporated. 17 ® (HJ) http://www.micrel.com M9999-092910-A MIC33153 nt ...

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