MIC5159-1.8YM6 MICREL [Micrel Semiconductor], MIC5159-1.8YM6 Datasheet

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MIC5159-1.8YM6

Manufacturer Part Number
MIC5159-1.8YM6
Description
Programmable Current Limit ?Cap LDO Regulator Controller
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet
General Description
Micrel’s
controller. Used with an external P-Channel MOSFET, the
MIC5159 forms a two-chip low-dropout regulator capable
of driving a wide range of output currents.
The MIC5159 operates from an input of 1.65V to 5.5V. The
low input voltage allows the MIC5159 to operate off of high
power 1.8V rails to generate lower voltages such as 1.5V.
Features of the MIC5159 include enable input and current-
limit protection. As a µCap design, the MIC5159 is stable
with ceramic output capacitors.
The MIC5159 is packaged in the IttyBitty
is offered in fixed and adjustable output voltages. Junction
temperature range of the MIC5159 is from –40°C to
+125°C.
Typical Application
IttyBitty is a registered trademark of Micrel, Inc.
June 2006
GND
V
IN
C1
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
MIC5159
5
1
3
U1 MIC5159BM6/YM6
EN
IN
IS
Adjustable Output Voltage
GND
GATE
is
FB
a
Q1–Q4
SUB15P01–52 × 4
precision-voltage
®
SOT-23-6, and
R1
R2
C1
regulator
C1
GND
V
OUT
Features
• Fast transient response
• Input voltage range: V
• ±1.0% initial output tolerance
• Fixed 1.8V or adjustable output voltage down to 1.25V
• Stable with ceramic output capacitor
• Capable up to 10A
• Excellent line and load regulation specifications
• Logic-controlled shutdown
• Programmable current limit
• Current-limit protection
• IttyBitty
• Available temperature range:–40°C to +125°C
Applications
• Ultra-high current, ultra-low dropout voltage regulator
• High-efficiency linear power supplies
• Low-voltage distributed power
• Fixed telecom
• Multimedia and PC power supplies
• Battery chargers
• Low-voltage DSP, microprocessor and microcontroller
408
power supplies
Programmable Current Limit µCap LDO
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
®
SOT-23-6 package
Regulator Controller
MIC5159
IN
1.65V to 5.5V
V
V
C
IN
OUT
OUT
= 3.3V
10A
= 2.5V
= 200µF
100mA
M9999-062706

Related parts for MIC5159-1.8YM6

MIC5159-1.8YM6 Summary of contents

Page 1

... MIC5159 forms a two-chip low-dropout regulator capable of driving a wide range of output currents. The MIC5159 operates from an input of 1.65V to 5.5V. The low input voltage allows the MIC5159 to operate off of high power 1.8V rails to generate lower voltages such as 1.5V. Features of the MIC5159 include enable input and current- limit protection µ ...

Page 2

... Micrel, Inc. Ordering Information Part Number Standard Pb-Free MIC5159BM6 MIC5159YM6 MIC5159-1.8BM6 MIC5159-1.8YM6 MIC5159-3.0BM6 MIC5159-3.0YM6 Note: Other Voltage available. Contact Micrel for details. Pin Configuration ADJ Pin 1 LZAA Index GND SOT-23-6 (M6) Adjustable Voltage Version Pin Description ...

Page 3

... Junction Temperature (T Package Thermal Resistance (5) = 1.2V 10µF, ceramic OUT Condition At 25°C Over temperature range 1.0V to 5.5V IN OUT I = 10mA to 1. ≤ 0.2V (MIC5159 OFF ≥ 1.2V (MIC5159 ON) EN (PFET fully ON 5.0V IN (PFET fully ON 3.3V IN (PFET fully ON 2. – ...

Page 4

... TEMPERATURE (°C) Shutdown Current vs. Input Voltage 20 -40° 25° 85° INPUT VOLTAGE (V) 4 MIC5159 Output Voltage vs. Load 1.240 V = 2.5V 1.239 IN 1.238 1.237 1.236 1.235 1.234 1.233 1.232 1.231 1.230 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 LOAD (A) Quiescent Current vs ...

Page 5

... Micrel, Inc. Functional Characteristics June 2006 2A 10mA 1.5V OUT C = 100µF OUT 5 MIC5159 1.8V OUT M9999-062706 ...

Page 6

... June 2006 GATE S Buffer I SNS Amplifier REF Enable EN Block Diagram – Fixed Output Voltages GATE S Buffer I SNS Amplifier REF Enable EN Block Diagram – Adjustable Output Voltages 6 V OUT V OUT V REF GND V OUT R1 ADJ REF MIC5159 M9999-062706 ...

Page 7

... Micrel, Inc. Application Information The MIC5159 is a high performance voltage regulator controller. When used with an external P-Channel MOSFET and a tiny ceramic output capacitor, it forms a wide variety of simple, inexpensive ultra-low-dropout voltage regulators. Current Sense Resistor Selection A current sense resistor placed between the input and the current sense pin (IS) allows for programmability of the current limit ...

Page 8

... Due to the fact that the MIC5159 delivers constant current limiting, power dissipated by the MOSFET is equal to the input voltage multiplied by the maximum output current. Figure 1 shows a simple, inexpensive circuit that allows the current limiting to be re-entrant ...

Page 9

... This is more of a factor at higher output currents. Also, a minimum amount of distance between the gate pin, on the MIC5159, and the P-Channel MOSFET gate is recommended. A long trace can create a small parasitic inductor. This, coupled to the gate capacitance of the MOSFET, can create a high frequency tank circuit. ...

Page 10

... Micrel, Inc. Designing with MIC5159 The following section details: • Application examples of possible input/output configurations with designator. • Schematics with “Bill recommendation, dropout maximum output current combination. • Further advice on MOSFET selection. 3.3V to 2.5V Conversion IN OUT I C MOSFET OUT OUT 1.0A 10µF Si4433DY 2.5A 22µF Si4433DY x2 2 ...

Page 11

... NOT 6.5A DS(ON) 9.0A 13. 1.25V Conversion IN OUT C MOSFET Package OUT 10µF Si3445DV TSOP-6 10µF Si4433DY SO-8 22µF Si4433DY x2 SO-8 10µF SUB15P01-52 D2PAK 44µF Si4433DY x3 SO-8 44µF Si4433DY x4 SO-8 22µF SUB15P01-52 x2 D2PAK 88µF SUB15P01-52 x3 D2PAK 88µF SUB15P01-52 x4 D2PAK MIC5159 Schematic M9999-062706 ...

Page 12

... Micrel, Inc. Schematic A Input/Output Combination Examples Input Output Maximum Current 1.8V 1.5V 2A 1.8V 1.25V 1A U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number Manufacturer C1 GRM40 X7R 106 6.3 Murata C2 C2012X5RR0J106M Murata R1 CRCW08051002 Vishay Dale R2 CRCW08059761 Vishay Dale CRCW08052152 Vishay Dale CRCW08054642 Vishay Dale CRCW08058253 Vishay Dale ...

Page 13

... Micrel, Inc. Schematic B Input/Output Combination Examples Input Output Maximum Current 1.8V 1. MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2012X5RR0J106M C2 GRM42-2 X5R 226K 6.3 C2012X5RR0J106M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1, Q2 Si3445DV U1 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3 ...

Page 14

... Output Maximum Current 3.3V 2.5V 1A 3.3V 1.8V 0.6A 3.3V 1.5V 0.5A 3.3V 1.25V 0.4A 2.5V 1.8V 1.25A 2.5V 1.5V 1A 2.5V 1.25V 0.75A 1.8V 1.25V 1.5A U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2 C2012X5RR0J106M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1 Si4433DY U1 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: ...

Page 15

... U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2012X5RR0J106M C2 GRM42-2 X5R 226K 6.3 C3225X5R1A226M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1, Q2 Si4433DY U1 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4 ...

Page 16

... Input Output Maximum Current 3.3V 2.5V 3.5A 3.3V 1.8V 2A 3.3V 1.5V 1.5A 3.3V 1.25V 1.25A 2.5V 1.8V 4A 2.5V 1.5V 3A 2.5V 1.25V 2A 1.8V 1.25V 4.5A U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2012X5RR0J106M C2 GRM42-2 X5R 226K 6.3 C3225X5R1A226M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1,Q2, Si4433DY Q3 U1 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3 ...

Page 17

... Input/Output Combination Examples Input Output Maximum Current 3.3V 2.5V 5A 3.3V 1.8V 2.5A 3.3V 1.5V 2A 3.3V 1.25V 1.75A 2.5V 1.8V 5.5A 2.5V 1.5V 4A 2.5V 1.25V 3A 1.8V 1.25V 6.5A U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2012X5RR0J106M C2 GRM42-2 X5R 226K 6.3 C3225X5R1A226M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1,Q2, Si4433DY Q3,Q4 U1 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3 ...

Page 18

... Micrel, Inc. Schematic G Input/Output Combination Examples Input Output Maximum Current 1.8V 1. MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2012X5RR0J106M C2,C3 GRM43 ER60J476K C4,C5,C6 C4532X5R0J476M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1,Q2 Si4403DY U1 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3 ...

Page 19

... Output Maximum Current 3.3V 2.5V 2.5A 3.3V 1.8V 1.25A 3.3V 1.5V 1A 3.3V 1.25V 0.75A 2.5V 1.8V 2.5A 2.5V 1.5V 2A 2.5V 1.25V 1.5A 1.8V 1.25V 3A U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2 C2012X5RR0J106M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1 SUB15P01-52 U1 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4 ...

Page 20

... Input Output Maximum Current 3.3V 2.5V 5A 3.3V 1.8V 2.5A 3.3V 1.5V 2A 3.3V 1.25V 1.75A 2.5V 1.8V 5.5A 2.5V 1.5V 4A 2.5V 1.25V 3A 1.8V 1.25V 6.5A U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2012X5RR0J106M C2 GRM42-2 X5R 226K 6.3 C3225X5R1A226M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1,Q2 SUB15P01-52 U1 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4 ...

Page 21

... Input Output Maximum Current 3.3V 2.5V 7.5A 3.3V 1.8V 3.75A 3.3V 1.5V 3A 3.3V 1.25V 2.75A 2.5V 1.8V 8A 2.5V 1.5V 6A 2.5V 1.25V 4.5A 1.8V 1.25V 9.5A U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2012X5RR0J106M C2, C3 GRM42-2 X5R 226K 6.3 C3225X5R1A226M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1,Q2 SUB15P01- MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3 ...

Page 22

... U1 MIC5159BM6/YM6 Application Circuit Bill of Materials Item Part Number C1 GRM40 X7R 106 6.3 C2012X5RR0J106M C2, C3 GRM42-2 X5R 226K 6.3 C3225X5R1A226M R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 R3 CRCW080549R9 F Q1, Q2 SUB15P01-52 Q3 MIC5159BM6/YM6 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3 ...

Page 23

... 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 June 2006 6-Pin SOT-23 (M6) indemnify Micrel for any damages resulting from such use or sale. © 2004 Micrel, Incorporated. 23 MIC5159 M9999-062706 ...

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