Datasheet

ManualsBrandsMicrochip ManualsIntegrated Circuits (ICs)LDO Voltage Regulator 3.3V 300mA SOT-23

 2018 Microchip Technology Inc. DS20006006A-page 1

MIC5501/2/3/4

Features

• Input Voltage Range: 2.5V to 5.5V

• Fixed Output Voltages from 1.0V to 3.3V

• 300 mA Guaranteed Output Current

• High Output Accuracy (±2%)

• Low Quiescent Current: 38 µA

• Stable with 1 µF Ceramic Output Capacitors

• Low Dropout Voltage: 160 mV @ 300 mA

• Output Discharge Circuit: MIC5502, MIC5504

• Internal Enable Pull-Down: MIC5503, MIC5504

• Thermal-Shutdown and Current-Limit Protection

• 4-Lead 1.0 mm x 1.0 mm Thin DFN Package

• MIC5501/4 5-Lead SOT23 Package

Applications

• Smartphones

• DSC, GPS, PMP, and PDAs

• Medical Devices

• Portable Electronics

• 5V Systems

General Description

The MIC5501/2/3/4 is an advanced general-purpose

LDO ideal for powering general-purpose portable

devices. The MIC5501/2/3/4 family of products

provides a high-performance 300 mA LDO in an

ultra-small 1 mm x 1 mm package. The MIC5502 and

MIC5504 LDOs include an auto-discharge feature on

the output that is activated when the enable pin is low.

The MIC5503 and MIC5504 have an internal pull-down

resistor on the enable pin that disables the output when

the enable pin is left floating. This is ideal for

applications where the control signal is floating during

processor boot up.

Ideal for battery-powered applications, the

MIC5501/2/3/4 offers 2% initial accuracy, low dropout

voltage (160 mV at 300 mA), and low ground current

(typically 38 µA). The MIC5501/2/3/4 can also be put

into a zero-off-mode current state, drawing virtually no

current when disabled.

The MIC5501/2/3/4 has an operating junction

temperature range of –40°C to +125°C.

Package Types

MIC5501/2/3/4

4-Lead DFN (MT)

(Top View)

MIC5501/4

SOT23-5 (M5)

(Top View)

VIN EN

VOUT GND

GND

NC VOUT

VIN

300 mA Single Output LDO in Small Packages

Summary of content (20 pages)

PAGE 1
MIC5501/2/3/4 300 mA Single Output LDO in Small Packages Features General Description • • • • • • • • • • • • The MIC5501/2/3/4 is an advanced general-purpose LDO ideal for powering general-purpose portable devices. The MIC5501/2/3/4 family of products provides a high-performance 300 mA LDO in an ultra-small 1 mm x 1 mm package. The MIC5502 and MIC5504 LDOs include an auto-discharge feature on the output that is activated when the enable pin is low.
PAGE 2
MIC5501/2/3/4 Typical Application Circuit MIC5501/2/3/4 MIC550X-xYMT VIN VBAT 1μF VOUT 1μF EN GND DS20006006A-page 2  2018 Microchip Technology Inc.
PAGE 3
MIC5501/2/3/4 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Supply Voltage (VIN) .................................................................................................................................... –0.3V to +6V Enable Voltage (VEN) .....................................................................................................................................–0.3V to VIN Power Dissipation (PD) .................................................................................
PAGE 4
MIC5501/2/3/4 TABLE 1-1: ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Characteristics: VIN = VEN = VOUT + 1V; CIN = COUT = 1 µF; IOUT = 100 µA; TJ = +25°C, bold values indicate –40°C to +125°C, unless noted. Parameter Enable Input Current MIC5501, MIC5502 Symbol IEN Enable Input Current MIC5503, MIC5504 IEN Turn-On Time tON Note 1: 2: 3: Min. Typ. Max. — 0.01 1 — 0.01 1 — 0.01 1 — 1.4 2 — 50 125 Units µA µA µs Conditions VEN = 0V VEN = 5.5V VEN = 0V VEN = 5.
PAGE 5
MIC5501/2/3/4 TEMPERATURE SPECIFICATIONS (Note 1) Parameters Sym. Min. Typ. Max.
PAGE 6
MIC5501/2/3/4 2.0 Note: TYPICAL PERFORMANCE CURVES The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. FIGURE 2-1: Ratio.
PAGE 7
MIC5501/2/3/4 FIGURE 2-7: Current. Output Voltage vs. Output FIGURE 2-10: Voltage. Current Limit vs. Supply VIN = 3V VOUT = 1.8V CIN = COUT = 1μF VEN (500mV/div) VOUT (500mV/div) Time (10μs/div) FIGURE 2-8: Voltage. Output Voltage vs. Supply FIGURE 2-11: VEN (1V/div) Enable Turn-On. VIN = 4.3V VOUT = 3.3V CIN = COUT = 1μF VOUT (1V/div) Time (20μs/div) FIGURE 2-9: Temperature. Output Voltage vs.  2018 Microchip Technology Inc. FIGURE 2-12: Enable Turn-On.
PAGE 8
MIC5501/2/3/4 VOUT = 3.3V CIN = COUT = 1μF VIN = 3.8V VOUT = 2.8V CIN = COUT = 1μF IOUT (100mA/div) VOUT (AC-COUPLED) (100mV/div) VEN (1V/div) VOUT (1V/div) Time (100μs/div) FIGURE 2-13: Time (20μs/div) FIGURE 2-16: Load Transient. Auto-Discharge (No Load). VIN = 4.3V VOUT = 3.3V CIN = COUT = 1μF IOUT (100mA/div) VOUT (AC-COUPLED) (100mV/div) Time (100μs/div) FIGURE 2-14: Load Transient. 5.5V VOUT = 2.8V CIN = COUT =1μF IOUT = 300mA 3.
PAGE 9
MIC5501/2/3/4 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE 4-Lead TDFN Pin Number SOT23-5 Pin Number Pin Name 1 5 VOUT Output Voltage. When disabled the MIC5502 and MIC5504 switches on an internal 25Ω load to discharge the external capacitors. 2 2 GND Ground. 3 3 EN Description Enable Input: Active-High. High = ON; Low = OFF. For MIC5501 and MIC5502 do not leave floating.
PAGE 10
MIC5501/2/3/4 4.0 APPLICATION INFORMATION MIC5501/2/3/4 are low-noise 300 mA LDOs. The MIC5502 and MIC5504 include an auto-discharge circuit that is switched on when the regulator is disabled through the enable (EN) pin. The MIC5503 and MIC5504 have an internal pull-down resistor on the EN pin to ensure the output is disabled if the control signal is tri-stated. The MIC5501/2/3/4 regulators are fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. 4.
PAGE 11
MIC5501/2/3/4 Substituting PD for PD(MAX) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. The junction-to-ambient thermal resistance for the minimum footprint is 250°C/W. The maximum power dissipation must not be exceeded for proper operation. For example, when operating the MIC5501-YMT at an input voltage of 3.
PAGE 12
MIC5501/2/3/4 5.0 PACKAGING INFORMATION 5.1 Package Marking Information TABLE 5-1: 4-Lead TDFN* Example XX ZX 5-Lead SOT23* Example XX VX ABBREVIATED TOP MARK Output Voltage Device MIC5501 Package Feature 1.0V 1.2V 1.8V 2.2V 2.5V 2.8V 3.0V 3.1V 3.
PAGE 13
MIC5501/2/3/4 4-Lead TDFN 1 mm x 1 mm Package Outline and Recommended Land Pattern Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging.  2018 Microchip Technology Inc.
PAGE 14
MIC5501/2/3/4 5-Lead SOT23 Package Outline and Recommended Land Pattern Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging. DS20006006A-page 14  2018 Microchip Technology Inc.
PAGE 15
MIC5501/2/3/4 APPENDIX A: REVISION HISTORY Revision A (April 2018) • Converted Micrel document MIC5501/2/3/4 to Microchip data sheet DS20006006A. • Minor text changes throughout.  2018 Microchip Technology Inc.
PAGE 16
MIC5501/2/3/4 NOTES: DS20006006A-page 16  2018 Microchip Technology Inc.
PAGE 17
MIC5501/2/3/4 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office. Examples: Device -X.X X XX -XX Part No. Output Voltage Junction Temp. Range Package Media Type Device: MIC5501: MIC5502: MIC5503: Single 300 mA LDO, General Purpose Single 300 mA LDO, Auto-Discharge Single 300 mA LDO, Internal EN PullDown Single 300 mA LDO, Auto-Discharge and Internal EN Pull-Down MIC5504: 1.0 1.2 1.8 2.2 2.5 2.
PAGE 18
MIC5501/2/3/4 NOTES: DS20006006A-page 18  2018 Microchip Technology Inc.
PAGE 19
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 20
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