MIC37100-1.8BS Micrel Inc, MIC37100-1.8BS Datasheet

IC REG LDO 1.0A 1.8V SOT-223

MIC37100-1.8BS

Manufacturer Part Number
MIC37100-1.8BS
Description
IC REG LDO 1.0A 1.8V SOT-223
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC37100-1.8BS

Regulator Topology
Positive Fixed
Voltage - Output
1.8V
Voltage - Input
2.25 ~ 6 V
Voltage - Dropout (typical)
0.28V @ 1A
Number Of Regulators
1
Current - Output
1A (Min)
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-223 (3 leads + Tab), SC-73, TO-261
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Limit (min)
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC37100-1.8BS
Manufacturer:
MIC
Quantity:
166
Part Number:
MIC37100-1.8BS
Manufacturer:
MICREL
Quantity:
176
Part Number:
MIC37100-1.8BS TR
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
General Description
The MIC37100, MIC37101, and MIC37102 are 1A low-
dropout, linear voltage regulators that provide low-voltage,
high-current output from an extremely small package.
Utilizing Micrel’s proprietary Super βeta PNP
element, the MIC37100/01/02 offers extremely low dropout
(typically 280mV at 1A) and low ground current (typically
11mA at 1A).
The MIC37100 is a fixed output regulator offered in the
SOT-223 package. The MIC37101 and MIC37102 are
fixed and adjustable regulators, respectively, in a thermally
enhanced power 8-pin SOIC (small outline package) and
the SOT-223 package. The MIC37102 is also available in
the S-PAK power package, for applications that require
higher power dissipation or higher operating ambient
temperatures.
The MIC37100/01/02 is ideal for PC add-in cards that
need to convert from standard 5V to 3.3V, 3.3V to 2.5V or
2.5V to 1.8V or lower. A guaranteed maximum dropout
voltage of 500mV over all operating conditions allows the
MIC37100/01/02 to provide 2.5V from a supply as low as
3V and 1.8V from a supply as low as 2.3V.
The MIC37100/01/02 is fully protected with overcurrent
limiting and thermal shutdown. Fixed output voltages of
1.5V, 1.65V, 1.8V, 2.5V and 3.3V are available on
MIC37100/01 with adjustable output voltages to 1.24V on
MIC37102.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
Super βeta PNP is a registered trademark of Micrel, Inc.
PowerPC is a registered trademark of IBM Corporation
September 2007
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
3.3V
V
IN
2.5V/1A Regulator
IN
MIC37100
GND
OUT
10F
ceramic
2.5V
®
pass
Features
• Fixed and adjustable output voltages to 1.24V
• µCap Regulator, 10µF ceramic output capacitor stable
• 280mV typical dropout at 1A
• 1A minimum guaranteed output current
• 1% initial accuracy
• Low ground current
• Current limiting and thermal shutdown
• Reversed-leakage protection
• Fast transient response
• Low-profile SOT-223 package
• Power SO-8 package
• S-PAK package (MIC37102 only)
Applications
• LDO linear regulator for PC add-in cards
• PowerPC
• High-efficiency linear power supplies
• SMPS post regulator
• Multimedia and PC processor supplies
• Battery chargers
• Low-voltage microcontrollers and digital logic
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V, 1.65V or 1.5V conversion
MIC37100/37101/37102
1A Low-Voltage µCap LDO
®
power supplies
350
300
250
200
150
100
50
0
0
vs. Output Current
OUTPUT CURRENT (A)
0.25
Dropout
2.5V
0.5
3.3V
OUT
OUT
0.75
1
M9999-090607

Related parts for MIC37100-1.8BS

MIC37100-1.8BS Summary of contents

Page 1

... MIC37100/01/02 offers extremely low dropout (typically 280mV at 1A) and low ground current (typically 11mA at 1A). The MIC37100 is a fixed output regulator offered in the SOT-223 package. The MIC37101 and MIC37102 are fixed and adjustable regulators, respectively thermally enhanced power 8-pin SOIC (small outline package) and the SOT-223 package ...

Page 2

... Micrel, Inc. Ordering Information Part Number Standard RoHS Compliant MIC37100-1.5BS MIC37100-1.5WS* MIC37100-1.65BS MIC37100-1.65WS* MIC37100-1.8BS MIC37100-1.8WS* MIC37100-2.5BS MIC37100-2.5WS* MIC37100-3.3BS MIC37100-3.3WS* MIC37101-1.5BM MIC37101-1.5YM MIC37101-1.65BM MIC37101-1.65YM MIC37101-1.8BM MIC37101-1.8YM Contact Factory MIC37101-2.1YM MIC37101-2.5BM MIC37101-2.5YM MIC37101-3.3BM MIC37101-3.3YM MIC37102BM MIC37102YM MIC37102BR MIC37102WR* * RoHS compliant with ‘high-melting solder’ exemption. ...

Page 3

... FLG 4 5 ADJ 5–8 3, TAB GND 3 MIC37100/37101/37102 Pin Description Enable (Input): CMOS-compatible control input. Logic high = enable, logic low or open = shutdown. Supply (Input). Regulator Output. Flag (Output): Open-collector error flag output. Active low = output under voltage. Adjustment Input: Feedback input. Connect to resistive voltage-divider network ...

Page 4

... IN OUT logic low (off) logic high (on 2.25V 0. 2.250V 250µ OUT % of V OUT 4 MIC37100/37101/37102 (2) )...................................... +2.25V to +6V IN )............................................ 0V to +6V EN D(max) ) ........................ –40°C to +125°C J SOT-223 (θ ) ....................................................15°C/W JC SOIC-8 (θ ).......................................................20°C/W JC S-PAK-5 (θ ).......................................................2°C/W JC < +125°C, unless noted. J Min – ≤ V ≤ 6V – ...

Page 5

... GND IN GND 8. V ≤ 0.8V, V ≤ 6V, and OUT September 2007 (worst case) ÷ (T – where T OUT J(max) J(min OUT 5 MIC37100/37101/37102 is +125°C and T is –40°C. J(max) J(min 1V. For output voltages below 2.25V, dropout voltage is IN OUT M9999-090607 ...

Page 6

... Micrel, Inc. Typical Characteristics September 2007 6 MIC37100/37101/37102 M9999-090607 ...

Page 7

... Micrel, Inc. Typical Characteristics (continued) September 2007 7 MIC37100/37101/37102 M9999-090607 ...

Page 8

... Micrel, Inc. Typical Characteristics (continued) September 2007 8 MIC37100/37101/37102 M9999-090607 ...

Page 9

... Micrel, Inc. Functional Characteristics September 2007 9 MIC37100/37101/37102 M9999-090607 ...

Page 10

... EN MIC37101 MIC37101 Fixed Regulator with Flag and Enable Block Diagram IN EN MIC37102 September 2007 1.240V Ref. Thermal Shut- down MIC37100 MIC37100 Fixed Regulator Block Diagram 1.180V 1.240V Ref. 1.240V Ref. MIC37102 Adjustable Regulator Block Diagram 10 MIC37100/37101/37102 OUT Thermal Shut- down OUT ...

Page 11

... V voltage Transient Response and 3.3V to 2.5V or 2.5V to 1.8V, 1.65V or 1.5V Conversion The MIC37100/01/02 has excellent transient response to variations in input voltage and load current. The device has been designed to respond quickly to load current variations and input voltage variations. Large output capacitors are not required to obtain this performance ...

Page 12

... Micrel, Inc. without operating in dropout, NPN-based regulators require an input voltage of 3.7V at the very least. The MIC37100 regulator will provide excellent performance with an input as low as 3.0V or 2.5V respectively. This gives the PNP based regulators a distinct advantage over older, NPN based linear regulators. ...

Page 13

... Figure 5 shows that the required area of copper is 160mm The θ depending upon the availability of copper ground plane to which it is attached. × GND MIC37100/37101/37102 this package is ideally 63°C/W, but it will vary JA 900 T = 125°C 800 J 700 T = 85° ...

Page 14

... Micrel, Inc. Package Information September 2007 SOT-223 (S) 5-Pin S-PAK (R) 14 MIC37100/37101/37102 M9999-090607 ...

Page 15

... 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 September 2007 8-Pin SOIC (M) indemnify Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. 15 MIC37100/37101/37102 M9999-090607 ...

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