Datasheet

ManualsBrandsMicrochip ManualsIntegrated Circuits (ICs)LDO Voltage Regulator 3.3V 150mA SOT-23

 2017 Microchip Technology Inc. DS20005785A-page 1

MIC5205

Features

• Ultra-Low Noise Output

• High Output Voltage Accuracy

• Guaranteed 150 mA Output

• Low Quiescent Current

• Low Dropout Voltage

• Extremely Tight Load and Line Regulation

• Very Low Temperature Coefficient

• Current and Thermal Limiting

• Reverse-Battery Protection

• Zero Off-Mode Current

• Logic-Controlled Electronic Enable

Applications

• Cellular Telephones

• Laptop, Notebook, and Palmtop Computers

• Battery-Powered Equipment

• PCMCIA V

and V

Regulation/Switching

• Consumer/Personal Electronics

• SMPS Post-Regulator and DC/DC Modules

• High-Efficiency Linear Power Supplies

General Description

The MIC5205 is an efficient linear voltage regulator

with ultra low-noise output, very low dropout voltage

(typically 17 mV at light loads and 165 mV at 150 mA),

and very low ground current (600 µA at 100 mA

output). The MIC5205 offers better than 1% initial

accuracy.

Designed especially for hand-held, battery-powered

devices, the MIC5205 includes a CMOS or TTL

compatible enable/shutdown control input. When shut

down, power consumption drops nearly to zero.

Regulator ground current increases only slightly in

dropout, further prolonging battery life.

Key MIC5205 features include a reference bypass pin

to improve its already excellent low-noise performance,

reversed-battery protection, current limiting, and

overtemperature shutdown.

The MIC5205 is available in fixed and adjustable output

voltage versions in a small SOT-23-5 package.

For low-dropout regulators that are stable with ceramic

output capacitors, see the µCap MIC5245/6/7 family.

Package Type

MIC5205

5-Lead SOT-23 (M5)

OUTBYP

LBxx

KBxx

Part

Identification

OUTADJ

LBAA

KBAA

GND GND

Pb-Free

Marking

150 mA Low-Noise LDO Regulator

Summary of content (20 pages)

PAGE 1
MIC5205 150 mA Low-Noise LDO Regulator Features General Description • • • • • • • • • • • The MIC5205 is an efficient linear voltage regulator with ultra low-noise output, very low dropout voltage (typically 17 mV at light loads and 165 mV at 150 mA), and very low ground current (600 µA at 100 mA output). The MIC5205 offers better than 1% initial accuracy.
PAGE 2
MIC5205 Typical Application Circuit MIC5205 5-Lead SOT-23 VIN MIC5205-x.xYM5 1 5 2 3 Enable Shutdown 4 EN EN (pin 3) may be connected directly to IN (pin 1). VOUT COUT = 2.2μF tantalum Low-Noise Operation: CBYP CBYP = 470pF, COUT ≥ 2.2μF Basic Operation: CBYP = not used, COUT ≥ 1μF Functional Block Diagrams Ultra-Low Noise Fixed Regulator VIN OUT IN VOUT COUT BYP CBYP (optional) Bandgap Ref. V REF EN Current Limit Thermal Shutdown MIC5205-x.
PAGE 3
MIC5205 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Supply Input Voltage (VIN) .......................................................................................................................... –20V to +20V Enable Input Voltage (VEN) ......................................................................................................................... –20V to +20V Power Dissipation (PD) (Note 1) .......................................................................................
PAGE 4
MIC5205 TABLE 1-1: ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Characteristics: VIN = VOUT +1V; IL = 100 µA; CL = 1.0 µF; VEN ≥ 2.0V; TJ = +25°C, bold values indicate –40°C < TJ < +125°C, unless noted. Parameter Ground Pin Current, Note 4 Ripple Rejection Current Limit Thermal Regulation Output Noise Symbol IGND Min. Typ. Max. Units — 80 125 µA — — 150 µA — 350 600 µA — — 800 µA — 600 1000 µA — — 1500 µA Conditions VEN ≥ 2.
PAGE 5
MIC5205 TEMPERATURE SPECIFICATIONS (Note 1) Parameters Sym. Min. Typ. Max.
PAGE 6
MIC5205 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.
PAGE 7
MIC5205 0 0 -40 -60 -80 -40 -60 Power Supply Rejection -100 1E+1 1k 1E+4 10k 1E+5 1M 1E+7 10M 10 1E+2 100k 1E+6 100 1E+3 FREQUENCY (Hz) FIGURE 2-10: Ratio. -60 IOUT = 10mA COUT = 2.2μF CBYP = 0.01μF -100 1E+1 1k 1E+4 10k 1E+5 1M 1E+7 10M 10 1E+2 100k 1E+6 100 1E+3 FREQUENCY (Hz) FIGURE 2-8: Ratio. Power Supply Rejection -40 -60 -100 1E+1 1k 1E+4 10k 1E+5 1M 1E+7 10M 10 1E+2 100k 1E+6 100 1E+3 FREQUENCY (Hz) FIGURE 2-11: Ratio.
PAGE 8
MIC5205 10 10 10mA, COUT = 1μF 0.1 0.01 1 NOISE (μV/√Hz) NOISE (μV/√Hz) 1 1mA COUT = 1μF CBYP = 10nF 0.001 VOUT = 5V 0.0001 1E+1 10 1E+2 1k 1E+4 100 1E+3 10k 1E+5 100k 1E+6 1M 1E+7 10M FREQUENCY (Hz) Noise Performance. FIGURE 2-13: FIGURE 2-16: 100mA Noise Performance. 10mA 0.1 0.01 VOUT = 5V COUT = 10μF electrolytic 1mA 0.0001 1k 1E+4 1E+1 10 1E+2 1M 1E+7 10k 1E+5 100k 1E+6 10M 100 1E+3 FREQUENCY (Hz) FIGURE 2-14: Noise Performance. 1 NOISE (μV/√Hz) NOISE (μV/√Hz) 0.
PAGE 9
MIC5205 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE Pin Number Fixed Version Pin Number Adj. Version Pin Name 1 1 IN 2 2 GND 3 3 EN Enable/Shutdown (Input): CMOS compatible input. Logic-high = enable, logic-low or open = shutdown 4 — BYP Reference Bypass: Connect external 470 pF capacitor to GND to reduce output noise. May be left open. — 4 ADJ Adjust (Input): Adjustable regulator feedback input.
PAGE 10
MIC5205 4.0 APPLICATION INFORMATION 4.1 Enable/Shutdown Forcing EN (enable/shutdown) high (greater than 2V) enables the regulator. EN is compatible with CMOS logic gates. If the enable/shutdown feature is not required, connect EN (pin 3) to IN (supply input, pin 1). See Figure 4-1. 4.2 Input Capacitor A 1 µF capacitor should be placed from IN to GND if there are more than 10 inches of wire between the input and the AC filter capacitor or if a battery is used as the input. 4.
PAGE 11
MIC5205 regulator circuit. For example, when operating the MIC5205-3.3YM5 at room temperature with a minimum footprint layout, the maximum input voltage for a set output current can be determined as follows: EQUATION 4-3: 4.7 Fixed Regulator Applications Figure 4-1 includes a 470 pF capacitor for low-noise operation and shows EN (pin 3) connected to IN (pin 1) for an application where enable/shutdown is not required. COUT = 2.2 µF minimum.
PAGE 12
MIC5205 VIN MIC5205YM5 1 R1 3 2.2μF 4 470pF FIGURE 4-3: 4.9 VOUT 5 2 R2 Ultra-Low Noise. Adjustable Voltage Application Figure 4-3 includes the optional 470 pF noise bypass capacitor from ADJ to GND to reduce output noise. 4.10 Dual-Supply Operation When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to ground. DS20005785A-page 12  2017 Microchip Technology Inc.
PAGE 13
MIC5205 5.0 PACKAGING INFORMATION 5.1 Package Marking Information 5-Lead SOT-23* (Fixed) XXXX NNN 5-Lead SOT-23* (Adjustable) XXXX NNN Legend: XX...X Y YY WW NNN e3 * Example KB33 943 Example KBAA 102 Product code or customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC® designator for Matte Tin (Sn) This package is Pb-free.
PAGE 14
MIC5205 5-Lead SOT-23 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. DS20005785A-page 14  2017 Microchip Technology Inc.
PAGE 15
MIC5205 APPENDIX A: REVISION HISTORY Revision A (May 2017) • Converted Micrel document MIC5205 to Microchip data sheet DS20005785A. • Minor text changes throughout.  2017 Microchip Technology Inc.
PAGE 16
MIC5205 DS20005785A-page 16  2017 Microchip Technology Inc.
PAGE 17
MIC5205 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office. PART NO. Device –X.X X XX –XX Examples: a) MIC5205YM5-TX: 150 mA Low-Noise LDO Regulator, Adjustable Voltage, –40°C to +125°C, 5-Lead SOT-23, 3k/Reel (Rev. Pin 1) b) MIC5205-3.0YM5-TR: 150 mA Low-Noise LDO Regulator, 3.0V, –40°C to +125°C, 5-Lead SOT-23, 3k/Reel c) MIC5205-2.8YM5-TX: 150 mA Low-Noise LDO Regulator, 2.
PAGE 18
MIC5205 NOTES: DS20005785A-page 18  2017 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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