MIC33264YGK-TR

MIC33264YGK-TR Datasheet

MIC33263/4

Part	Datasheet
MIC33264YGK-TR	MIC33264YGK-TR (pdf)

Related Parts	Information
MIC33263YGK-TR	MIC33263YGK-TR
MIC33263YGK-T5	MIC33263YGK-T5
MIC33264YGK-T5	MIC33264YGK-T5

PDF Datasheet Preview
MIC33263/4 4MHz, 2A Buck Regulator with Integrated Inductor and HyperLight The MIC33263/4 is a highly-efficient synchronous buck regulator with an integrated inductor which provides the optimal trade-off between footprint and efficiency. The MIC33263/4 operates at 4MHz switching frequency and provides up to 2A output current. In addition, the 100% duty cycle and HyperLight HLL mode-of-operation delivers very-high efficiency at light loads and ultra-fast transient response which makes the MIC33263/4 perfectly suited for any space-constrained application and great alternative for low dropout regulators. 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 MIC33263/4 provides small compact total solution size of 4.6mm x 7mm with very few tiny external components. At higher loads, the MIC33263/4 provides a constant switching frequency around 4MHz while achieving peak efficiencies up to It also includes under-voltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, power good PG indicator, and thermal shutdown. The MIC33263/4 is available in a 20-pin 2.5mm x 3.0mm x 1.9mm QFN package with an operating junction temperature range from to +125°C. Datasheets and support documentation are available on Micrel’s website at: • Integrated MOSFETs, inductor • 100% duty cycle • 4MHz PWM operation in continuous mode • 2A output current • Low output voltage ripple • 85% typical efficiency at 1mA and up to 93% peak efficiency • Ultra-fast transient response • Advanced copper lead frame design provides superior thermal performance • Thermal-shutdown and current-limit protection • Low-radiated emission EMI per EN55022, class B • Adjustable output voltage 0.7V to 5V • Configurable soft-start with pre-bias start-up capability • Auto discharge of 180Ω MIC33264 only • Low profile 2.5mm x 3.0mm x 1.9mm QFN packages • 0.1µA shutdown current • 33µA quiescent current • 5V point-of-load POL • Low voltage distributed power systems • Space-constrained applications • Portable devices • SSD storage systems • Digital cameras EFFICENCY % Efficiency vs. Output Current VOUT = 2.5V VOUT = 1.8V VOUT = 1.2V VIN = 3.3V 1000 OUTPUT CURRENT mA HyperLight Load is a registered trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 408 944-0800 • fax + 1 408 474-1000 • January 28, 2015 Micrel, Inc. Ordering Information Output Voltage Auto Discharge Junction Temperature Range MIC33263YGK to +125°C MIC33264YGK to +125°C Note QFN is a GREEN, RoHS-compliant package. Mold compound is Halogen Free. Pb-free. Lead finish is matte tin. Pin Configuration MIC33263/4 Package 1, 2 20-Pin 2.5mm x 3mm QFN 20-Pin 2.5mm x 3mm QFN 2.5mm x 3mm QFN GK Top View Pin Description Pin Number 1, 20 2, 8, 9 Pin Name PVIN PGND 3, 4, 5, 6, 7 10, 11, 12, 13 VOUT AGND AVIN Pin Function Power Input Voltage Connect a capacitor to PGND to decouple the noise. Power Ground. Switch Output Internal power MOSFET output switches. Disable pull down 180 Ohms MIC33264 only . Inductor Output. Connect a capacitor to PGND to filter the switcher output voltage. Analog Ground Connect to central ground point where all high current paths meet CIN, COUT, PGND for best operation. Analog Input Voltage Connect a capacitor to ground to decouple the noise. Soft-Start Place a capacitor from SS pin to ground to program the soft-start time Power Good Open Drain output for the power good indicator. Place a resistor between this pin and a voltage source to detect a power good condition. Feedback Connect a resistor divider from the output to ground to set the output voltage. Enable Input Logic high enables operation of the regulator. Logic low will shut down the device. Do not leave floating. January 28, 2015 Micrel, Inc. MIC33263/4 Absolute Maximum Ratings 3 Supply Voltage VIN = VAVIN = VPVIN −0.3V to 6V Power Good Voltage VPG −0.3V to 6V Output Switch Voltage VSW −0.3V to 6V Enable Input Voltage to VIN Junction Temperature TJ +150°C Storage Temperature Range TS −65°C to +150°C Lead Temperature soldering, 10s ............................ 260°C ESD Sensitive Operating Ratings 4 Supply Voltage VIN = VAVIN = VPVIN 2.7V to 5.5V Enable Input Voltage VEN to VIN Feedback Voltage VFB 0.7V to VIN Junction Temperature Range TJ .. TJ +125°C Thermal Resistance 20-Pin 2.5mm x 3mm QFN 50°C/W Electrical Characteristics 6 TA = 25°C VIN = VEN = 3.6V COUT = 22µF unless otherwise specified. Bold values indicate −40°C TJ +125°C, unless otherwise specified. Parameter

PDF Datasheet Preview

MIC33263/4
4MHz, 2A Buck Regulator with Integrated Inductor and HyperLight

The MIC33263/4 is a highly-efficient synchronous buck regulator with an integrated inductor which provides the optimal trade-off between footprint and efficiency. The MIC33263/4 operates at 4MHz switching frequency and provides up to 2A output current. In addition, the 100% duty cycle and HyperLight HLL mode-of-operation delivers very-high efficiency at light loads and ultra-fast transient response which makes the MIC33263/4 perfectly suited for any space-constrained application and great alternative for low dropout regulators. 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 MIC33263/4 provides small compact total solution size of 4.6mm x 7mm with very few tiny external components.

At higher loads, the MIC33263/4 provides a constant switching frequency around 4MHz while achieving peak efficiencies up to It also includes under-voltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, power good PG indicator, and thermal shutdown. The MIC33263/4 is available in a 20-pin 2.5mm x 3.0mm x 1.9mm QFN package with an operating junction temperature range from to +125°C.

Datasheets and support documentation are available on Micrel’s website at:
• Integrated MOSFETs, inductor
• 100% duty cycle
• 4MHz PWM operation in continuous mode
• 2A output current
• Low output voltage ripple
• 85% typical efficiency at 1mA and up to 93% peak
efficiency
• Ultra-fast transient response
• Advanced copper lead frame design provides superior
thermal performance
• Thermal-shutdown and current-limit protection
• Low-radiated emission EMI per EN55022, class B
• Adjustable output voltage 0.7V to 5V
• Configurable soft-start with pre-bias start-up capability
• Auto discharge of 180Ω MIC33264 only
• Low profile 2.5mm x 3.0mm x 1.9mm QFN packages
• 0.1µA shutdown current
• 33µA quiescent current
• 5V point-of-load POL
• Low voltage distributed power systems
• Space-constrained applications
• Portable devices
• SSD storage systems
• Digital cameras

EFFICENCY %

Efficiency vs. Output Current

VOUT = 2.5V

VOUT = 1.8V

VOUT = 1.2V

VIN = 3.3V
1000

OUTPUT CURRENT mA

HyperLight Load is a registered trademark of Micrel, Inc.

Micrel Inc.
• 2180 Fortune Drive
• San Jose, CA 95131
• USA
• tel +1 408 944-0800
• fax + 1 408 474-1000
•

January 28, 2015

Micrel, Inc.
Ordering Information

Output Voltage Auto Discharge Junction Temperature Range

MIC33263YGK
to +125°C

MIC33264YGK
to +125°C

Note QFN is a GREEN, RoHS-compliant package. Mold compound is Halogen Free. Pb-free. Lead finish is matte tin.

Pin Configuration

MIC33263/4

Package 1, 2 20-Pin 2.5mm x 3mm QFN 20-Pin 2.5mm x 3mm QFN
2.5mm x 3mm QFN GK Top View

Pin Description

Pin Number 1, 20 2, 8, 9

Pin Name PVIN PGND
3, 4, 5, 6, 7
10, 11, 12, 13

VOUT

AGND

AVIN

Pin Function

Power Input Voltage Connect a capacitor to PGND to decouple the noise.

Power Ground.

Switch Output Internal power MOSFET output switches. Disable pull down 180 Ohms MIC33264 only .

Inductor Output. Connect a capacitor to PGND to filter the switcher output voltage.

Analog Ground Connect to central ground point where all high current paths meet CIN, COUT, PGND for best operation.

Analog Input Voltage Connect a capacitor to ground to decouple the noise.

Soft-Start Place a capacitor from SS pin to ground to program the soft-start time

Power Good Open Drain output for the power good indicator. Place a resistor between this pin and a voltage source to detect a power good condition.

Feedback Connect a resistor divider from the output to ground to set the output voltage.

Enable Input Logic high enables operation of the regulator. Logic low will shut down the device. Do not leave floating.

January 28, 2015

Micrel, Inc.

MIC33263/4

Absolute Maximum Ratings 3

Supply Voltage VIN = VAVIN = VPVIN −0.3V to 6V Power Good Voltage VPG −0.3V to 6V Output Switch Voltage VSW −0.3V to 6V Enable Input Voltage to VIN Junction Temperature TJ +150°C Storage Temperature Range TS −65°C to +150°C Lead Temperature soldering, 10s ............................ 260°C ESD Sensitive

Operating Ratings 4

Supply Voltage VIN = VAVIN = VPVIN 2.7V to 5.5V Enable Input Voltage VEN to VIN Feedback Voltage VFB 0.7V to VIN Junction Temperature Range TJ .. TJ +125°C Thermal Resistance
20-Pin 2.5mm x 3mm QFN 50°C/W

Electrical Characteristics 6

TA = 25°C VIN = VEN = 3.6V COUT = 22µF unless otherwise specified. Bold values indicate −40°C TJ +125°C, unless otherwise specified.

Parameter

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MIC33264YGK-TR Datasheet file may be downloaded here without warranties.

Datasheet ID: MIC33264YGK-TR 647899