mic5319-2.9yml Micrel Semiconductor, mic5319-2.9yml Datasheet

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mic5319-2.9yml

Manufacturer Part Number
mic5319-2.9yml
Description
Mic5319 500ma ?cap Ultra-low Dropout, High Psrr Ldo Regulator
Manufacturer
Micrel Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
MIC5319-2.9YML
Manufacturer:
MICREL
Quantity:
13 000
Part Number:
MIC5319-2.9YML
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
V
General Description
The MIC5319 is a high-performance, 500mA LDO regula-
tor, offering extremely high PSRR and very low noise while
consuming low ground current.
Ideal for battery-operated applications, the MIC5319 features
1% accuracy, extremely low-dropout voltage (200mV @
500mA), and low ground current at light load (typically 90µA).
Equipped with a logic-compatible enable pin, the MIC5319
can be put into a zero-off-mode current state, drawing no
current when disabled.
The MIC5319 is a µCap design operating with very small
ceramic output capacitors for stability, thereby reducing
required board space and component cost.
The MIC5319 is available in fixed-output voltages and adjust-
able output voltages in the super-compact 2mm x 2mm MLF
leadless package and thin SOT-23-5 package.
Additional voltage options are available. Contact Micrel
marketing.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Typical Application
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
March 2008
IN
1µF
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
VIN
EN
MIC5319
GND
VOUT
BYP
0.1µF
2.2µF
2.8V@500mA
V
OUT
®
1
Features
• Ultra-low dropout voltage 200mV @ 500mA
• Input voltage range: 2.5 to 5.5V
• Stable with ceramic output capacitor
• Low output noise — 40µVrms
• Low quiescent current of 90µA total
• High PSRR, up to 70dB @1kHz
• Fast turn-on-time — 40µs typical
• High output accuracy:
• Thermal shutdown protection
• Current-limit protection
• Logic-controlled Enable
• Tiny 2mm x 2mm MLF
• Thin SOT-23-5 package, 500mA peak
Applications
• Cellular phones
• PDAs
• Fiber optic modules
• Portable electronics
• Notebook PCs
• Audio Codec power supplies
• ±1.0% initial accuracy
• ±2.0% over temperature
500mA µCap Ultra-Low Dropout
High PSRR LDO Regulator
100
90
80
70
60
50
40
30
20
10
200
180
160
140
120
100
0
10
80
60
40
20
0
(Bypass Pin Cap = 0.1µF)
0
MIC5319
100
OUTPUT CURRENT (mA)
100
vs. Output Current
500mA
FREQUENCY (Hz)
Dropout Voltage
®
50mA
package, 500mA continuous
200
1k
PSRR
Vout = 2.8V
Vin = Vout + 1V
Cout = 2.2µF
300
Vout = 2.8V
Cout = 2.2 µ F
10k
100µA
400
100k
500
1M
M9999-032808

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mic5319-2.9yml Summary of contents

Page 1

... Equipped with a logic-compatible enable pin, the MIC5319 can be put into a zero-off-mode current state, drawing no current when disabled. The MIC5319 is a µCap design operating with very small ceramic output capacitors for stability, thereby reducing required board space and component cost. The MIC5319 is available in fixed-output voltages and adjust- able output voltages in the super-compact 2mm x 2mm MLF leadless package and thin SOT-23-5 package ...

Page 2

... Pb-Free MIC5319-1.3HYML MIC5319-1.8BML MIC5319-1.8YML MIC5319-1.85YML MIC5319-2.5BML MIC5319-2.5YML MIC5319-2.6YML MIC5319-2.7YML MIC5319-2.8BML MIC5319-2.8YML MIC5319-2.9YML MIC5319-3.0YML MIC5319-3.3BML MIC5319-3.3YML MIC5319-5.0BML MIC5319-5.0YML MIC5319BML MIC5319YML MIC5319-1.3HYD5 MIC5319-1.8YD5 MIC5319-1.85YD5 MIC5319-2 ...

Page 3

... No connection for fixed voltage parts. 4 BYP Reference Bypass: Connect external 0.1µF to GND for reduced output noise. May be left open. – EPAD Exposed Heatsink Pad connected to ground internally BYP 5 ADJ GND 2 VIN 3 4 VOUT MIC5319BML/YML (Adjustable) 6-Pin 2mm x 2mm MLF™ (ML) (Top View) M9999-032808 ...

Page 4

Absolute Maximum Ratings Supply Input Voltage (V ) ...................................... Enable Input Voltage (V ) .................................... Power Dissipation (P ) .........................Internally Limited D Junction Temperature(T ) ......................... –40°C to +125°C J Storage Temperature (T ) ...

Page 5

Typical Characteristics PSRR (Bypass Pin Cap = 0.1µF) 100 90 100µA 50mA 500mA Vout = 2.8V Vin = Vout + 1V 10 Cout = 2.2µ 100 1k 10k 100k 1M FREQUENCY ...

Page 6

Dropout Voltage vs. Temperature Iload = 150mA 10 Vout = 2.8V Cout = 2.2µF 0 -40 - 100 120 TEMPERATURE (°C) Short Circuit Current vs. Input Voltage 700 ...

Page 7

Functional Characteristics March 2008 7 M9999-032808 ...

Page 8

... Functional Diagram VIN EN BYP MIC5319 VIN EN BYP MIC5319 March 2008 Quick- V REF Start Error Amp Thermal Shutdown Current Limit MIC5319 Block Diagram - Fixed Quick- V REF Start Error Amp Thermal Shutdown Current Limit MIC5319 Block Diagram - Adjustable 8 VOUT GND VOUT ADJ GND M9999-032808 ...

Page 9

... Adjustable Regulator Application Adjustable regulators use the ratio of two resistors to multiply the reference voltage to produce the desired output voltage. The MIC5319 can be adjusted from 1.25V to 5.5V by using two external resistors (Figure 1). The resistors set the output voltage based on the following equation: R1  ...

Page 10

... Table 1 shows junction-to-ambient thermal resistance for the MIC5319 in the 2mm x 2mm MLF package. Package θ Recommended JA Minimum Footprint ® MLF 93°C/W SOT-23-5 235°C/W Table 1. Thermal Resistance Substituting 0.25W for P (max) and solving for the ambient D operating temperature will give the maximum operating condi- tions for the regulator circuit ...

Page 11

Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel ...

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