Datasheet

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D at ash ee t
A S1 3 6 0
1 .5 µ A L o w -P o w e r, P o s iti ve Vo lt a g e R e g u la to r
2 Key Features
The AS1360 low-power, positive voltage regulator was designed to
deliver up to 250mA while consuming only 1.5µA of quiescent current. The device is available in fixed output voltages of 1.8, 2.1, 2.5,
3.0, 3.3, 4.0, 4.5 and 5.0V.
Low Quiescent Current: 1.5µA
Input Voltage Range: Up to 20V
The device features integrated short-circuit and overcurrent protection.
Low Dropout Voltage
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1 General Description
- 250mV @ 100mA
The wide input voltage range, low-dropout voltage, and high-accuracy output voltage makes the device perfectly suited for 2- and 3cell battery-powered and portable applications.
Fixed Output Voltages: 1.8, 2.1, 2.5, 3.0, 3.3, 4.0, 4.5, 5.0V
High Output Current: 250mA (VOUT = 5.0V)
High-Accuracy Output Voltage: ±1.5%
Exceptional Line Regulation: 0.1%/V
Low Temperature Drift: ±100ppm/ºC
Integrated Short-Circuit and Overcurrent Protection
3-pin SOT23 Package
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The low dropout voltage (650mV) prolongs battery life and allows
high current in small applications when operated with minimum
input-to-output voltage differentials.
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- 400mV @ 200mA
The device features very stable output voltage (using only 1µF tantalum or aluminum-electrolytic capacitors), strict output voltage regulation tolerances (±0.5%), and excellent line-regulation.
The AS1360 is available in a 3-pin SOT23 package.
3 Applications
The device is ideal for mobile phones, PDAs, digital cameras, smart
battery packs, battery-powered alarms, solar-powered instruments,
intelligent instruments, CO2 and smoke detectors, CPU power supplies, and any battery-powered application.
3
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VIN
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Figure 1. AS1360 - Block Diagram
2
VOUT
Short-Circuit
Protection
+
–
Voltage
Reference
AS1360
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GND
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AS1360
Datasheet - P i n o u t a n d P a c k a g i n g
4 Pinout and Packaging
Pin Assignments
1
AS1360
VOUT
3
VIN
2
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GND
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Figure 2. Pin Assignments (Top View)
Pin Descriptions
Table 1. Pin Descriptions
Pin Number
1
2
Pin Name
Description
GND
Ground. This pin should be connected to the negative side of the output and the negative
terminal of the input capacitor. No high-current flows out of this pin, only bias current (1.5µA,
typ).
Note: Voltage drops between this pin and the negative side of the load should be minimized.
VOUT
Regulated Output Voltage. This pin should be connected to the positive side of the load and
the positive terminal of the output capacitor. Current flowing out of this pin is equivalent DC
load current.
Note: The positive side of the output capacitor should be mounted as close as is practical
to this pin.
VIN
Unregulated Input Voltage. This pin should be connected to the positive terminal of the input
capacitor.
Note: The input capacitor should be mounted as close as is practical to this pin.
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3-pin SOT23
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AS1360
Datasheet - A b s o l u t e M a x i m u m R a t i n g s
5 Absolute Maximum Ratings
Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of
the device at these or any other conditions beyond those indicated in Section 6 Electrical Characteristics on page 4 is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Table 2. Absolute Maximum Ratings
Max
Units
Input Voltage
+30
V
Continuous Output Current
PD/
(VIN - VOUT)
mA
Peak Output Current
500
mA
VIN + 0.3V
or +7V
V
Minimum of the two values
kV
Norm: MIL 883 E method 3015
230
ºC/W
Typical FR4, 4-layer application
+125
ºC
Electrical Parameters
Output Voltage
- 0.3V
Electrostatic Discharge
+/- 1
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Electrostatic Discharge HBM
Thermal Information
Comments
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Parameter
Thermal Resistance ΘJA
Temperature Ranges and Storage Conditions
Storage Temperature Range
-40
Package Body Temperature
Humidity non-condensing
5
ºC
85
%
1
Represents a max. floor life time of unlimited
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Moisture Sensitive Level
+260
The reflow peak soldering temperature (body
temperature) specified is in compliance with IPC/
JEDEC J-STD-020 “Moisture/ Reflow Sensitivity
Classification for Non-Hermetic Solid State
Surface Mount Devices”.
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AS1360
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
6 Electrical Characteristics
Typical values are at TAMB = +25°C, VDD = 3.3V (unless otherwise specified). All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or SQC (Statistical Quality Control) methods.
Table 3. Electrical Characteristics
Parameter
Operating Temperature
Range
VIN
Input Voltage
VOUT
Output Voltage
IOUT(MAX)
-40
Max
Unit
+85
°C
1
IOUT = 40mA ,
IOUT = 15mA if VOUT = 1.8V
VOUT = 5.0V
(VIN = VOUTNOM + 1.0V)
VOUT = 4.0V
VOUT = 3.3V
VOUT = 3.0V
VOUT = 2.5V
VOUT = 2.1V
VOUT = 1.8V
VOUT = 5.0V, 1mA ≤ IOUT ≤ 100mA
VOUT = 4.0V, 1mA ≤ IOUT ≤ 100mA
VOUT = 3.3V, 1mA ≤ IOUT ≤ 80mA
VOUT = 3.0V, 1mA ≤ IOUT ≤ 80mA
VOUT = 2.5V, 1mA ≤ IOUT ≤ 60mA
VOUT = 2.1V, 1mA ≤ IOUT ≤ 40mA
VOUT = 1.8V, 1mA ≤ IOUT ≤ 30mA
IOUT = 40mA,
(VOUTNOM +1.0) ≤ VIN ≤ 10.0V
IOUT = 200mA, VOUTNOM = 5.0V
IOUT = 200mA, VOUTNOM = 4.0V
IOUT = 160mA, VOUTNOM = 3.3V
IOUT = 160mA, VOUTNOM = 3.0V
IOUT = 120mA, VOUTNOM = 2.5V
IOUT = 60mA, VOUTNOM = 2.1V
IOUT = 20mA, VOUTNOM = 1.8V
VIN = VOUTNOM +1.0V
VOUTNOM VOUTNOM VOUTNOM
- 1.5%
± 0.5%
+ 1.5%
250
200
150
150
125
115
110
-1.60
-2.25
-2.72
-3.00
-3.60
-2.60
-1.60
Load Regulation
∆VOUT x 100/
∆VIN x VOUT
Line Regulation
2
Dropout Voltage
IQ
Input Quiescent Current
Temperature Coefficient of
3
VOUT
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VIN - VOUT
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V
±0.8
±1.1
±1.3
±1.5
±1.8
±1.6
±0.8
+1.60
+2.25
+2.72
+3.00
+3.60
+2.60
+1.60
%
0.1
0.25
%/V
400
400
400
400
400
200
180
1.5
630
700
700
700
700
500
300
3.0
mV
µA
IOUT = 40mA,
-40ºC ≤ TAMB ≤ +85ºC
±100
ppm/ºC
10% VOUTNOM to 90% VOUTNOM, VIN =
0V to VOUTNOM + 1V,
RLOAD = 25Ω resistive
150
µs
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Output Rise Time
V
mA
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∆VOUT/VOUT
tR
Typ
20
Maximum Output Current
TCVOUT
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TAMB
Condition
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Symbol
1. VOUTNOM is the nominal device output voltage.
2. Measured at a constant junction temperature using low duty cycle pulse testing.
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3. TCVOUT = (VOH - VOL) x 10 /(VOUTNOM x Temperature).
Where:
VOH is the highest voltage measured over the device temperature range.
VOL is the lowest voltage over the device temperature range.
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AS1360
Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
7 Typical Operating Characteristics
VOUT = 3.3V, ILOAD = 100µA, VIN = 4.3V, CIN 1µF (tantalum), COUT = 1µF (tantalum), TAMB = +25ºC (unless otherwise specified).
1.9
1.8
1.8
85°C
1.6
1.5
25°C
1.4
0°C
1.3
1.2
1.6
25°C
1.5
0°C
1.4
1.3
-40°C
1.2
-40°C
1.1
85°C
1.7
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1.7
Supply Current (µA) .
1.9
1.1
4
5
6
7
8
9
10
0
25
50
Input Voltage (V)
1.9
100 125 150 175 200
Figure 6. Output Voltage vs. Input Voltage
3.312
1.8
25°C
3.31
Output Voltage (V) .
Supply Current (µA) .
75
Load Current (mA)
Figure 5. Supply Current vs. Temperature
1.7
1.6
1.5
1.4
1.3
1.2
0°C
3.308
3.306
3.304
3.302
-40°C
3.3
85°C
3.298
3.296
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1.1
-40 -20
0
20 40 60 80 100 120 140
4
5
6
Temperature (°C)
Dropout Voltage (mV) .
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-40°C
0°C
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10
85°C
3.29
3.28
9
700
25°C
3.3
8
Figure 8. Dropout Voltage vs. Load Current
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3.31
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Input Voltage (V)
Figure 7. Output Voltage vs. Load Current
Output Voltage (V) .
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Figure 4. Supply Current vs. Load Current
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Supply Current (µA) .
Figure 3. Supply Current vs. Input Voltage
3.27
3.26
3.25
600
500
400
25°C
0°C
300
200
-40°C
100
3.24
85°C
3.23
0
0
10
20
30
40
50
60
70
80
0
Load Current (mA)
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20
40
60
80 100 120 140 160
Load Current (mA)
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AS1360
Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s
Figure 9. Load Regulation vs. Temperature
Figure 10. Line Regulation vs. Temperature
0.2
VIN = 10V
Line Regulation (%/V) .
2.1
1.9
1.7
1.5
VIN = 6V
1.3
1.1
VIN = 4.3V
0.9
40mA
-0.2
-0.4
-0.6
-0.8
150mA
0.5
-40
-15
10
35
60
85
-1.2
-40
1.8
1.6
1.4
1.2
0.8
0.6
0.4
35
60
85
Figure 12. Startup Rise Time
VOUT
1
10
Temperature (°C)
Figure 11. Output Voltage vs. Input Voltage; Dropout
2
-15
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Temperature (°C)
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-1
0.7
Output Voltage (V)
1mA / 10mA
0
500mV/Div
Load Regulation (%) .
2.3
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2.5
Iload = 40mA
0.2
Iload = 100mA
0
1.2
1.4
1.6
1.8
2
2.2
2.4
2.6
50µs/Div
1V/Div
1V/Div
VOUT
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Figure 13. Startup Delay
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Input Voltage (V)
500µs/Div
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Note: All graphs where measured without additional heat sinks, with
the SOT23 package mounted on a 4-layer PCB. Adding additional heat sinks will improve performance in high temperature
enviroment.
Revision 1.07
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AS1360
Datasheet - D e t a i l e d D e s c r i p t i o n
8 Detailed Description
The AS1360 is a low-power, positive voltage regulator designed in such a way that the supply current is independent from the load current. The
device regulates the output by comparing the output voltage to an internally generated reference voltage.
Short Circuit/Overcurrent Protection
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The device is available in fixed output voltages of 1.8, 2.5, 3.0, 3.3, and 5.0V. Fixed output voltages are generated using the internal resistor
divider network (see Figure 1 on page 1).
The AS1360 monitors current flow through the p-channel MOSFET. In short-circuit or overcurrent conditions, the integrated short-circuit protection circuitry will limit output current.
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Note: Thermal Dissipation according to Absolute Maximum Ratings on page 3 must be considered.
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AS1360
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
9 Application Information
+9V
Alkaline
Battery
3
VIN
CIN
1µF
AS1360
VOUT = 3.3V
COUT
1µF
1
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Tantalum Capacitor
*
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Power Dissipation
VOUT
*
GND
*
2
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Figure 14. AS1360 - Typical Application Diagram
Power dissipation (PD) of the AS1360 is the sum of the power dissipated by the p-channel MOSFET and the quiescent current required to bias
the internal voltage reference and the internal power amplifier, and is calculated as:
PD (P-Channel MOSFET) = (VIN - VOUT)IOUT
(EQ 1)
Internal power dissipation as a result of the bias current for the internal voltage reference and the error amplifier is calculated as:
PD (Bias) = VINIGND
(EQ 2)
PD(Total) = PD (P-Channel MOSFET) + PD (Bias)
(EQ 3)
Total AS1360 power dissipation is calculated as:
The internal quiescent bias current (2µA, typ) is such that the PD(Bias) term of (EQ 3) can be disregarded and the maximum power dissipation
can be estimated using VIN(MAX) and VOUT(MIN) to obtain a maximum voltage differential between VIN and VOUT, and multiplying the maximum voltage differential by the maximum output current:
PD = (VIN(MAX)VOUT(MIN))IOUT(MAX)
Where:
(EQ 4)
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VIN = 3.3 to 4.1V
VOUT = 3.0V ±2%
IOUT = 1 to 100mA
TAMB(MAX) = 55ºC
PMAX = (4.1V - (3.0V x 0.98)) x 100mA = 116.0mW
Junction Temperature
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The AS1360 junction temperature (TJ) can be determined by first calculating the thermal resistance from junction temperature-to-ambient temperature.
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Note: Thermal resistance is estimated to be the junction temperature-to-air temperature RΦJA, and is approximately 230°C/W or 335ºC/W
(when mounted on 1 square inch of copper). RΦJA will vary depending on PCB layout, air-flow and application specific conditions.
The AS1360 junction temperature is determined by calculating the rise in TJ above TAMB, and then adding the increase of TAMB:
TJ = PD(MAX) x RΦJA + TAMB
(EQ 5)
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From (EQ 5), the value of TJ can be calculated as:
TJ = 116.0mW x 230ºC/W + 55ºC
Therefore:
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TJ = 81.68ºC
Revision 1.07
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AS1360
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
External Component Selection
Input Capacitor
In applications where input impedance is approximately 10Ω, a 1µF capacitor is sufficient for CIN (see Figure 14 on page 8).
In cases where the AS1360 is operated from a battery, or when there is significant distance between the input source to the AS1360, larger values for CIN may be required for output stability.
Output Capacitor
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Note: For values of COUT > 1µF, the value of CIN should be increased to prevent high source-impedance oscillations.
In most applications for the AS1360, a 1µF capacitor (ESR > 0.1Ω/< 5Ω, fRES > 1MHz) is sufficient for COUT (see Figure 14 on page 8).
For improved power supply noise rejection and device transient response, larger values can be used for COUT.
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Note: For values of COUT > 1µF, the input impedance must not be so large that it causes high-input impedance oscillations.
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AS1360
Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s
10 Package Drawings and Markings
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Figure 15. 3-pin SOT23 Marking
Table 4. Packaging Code xxxx
xxxx
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encoded Datecode
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AS1360
Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s
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Figure 16. 3-pin SOT23 Package
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AS1360
Datasheet - O r d e r i n g I n f o r m a t i o n
11 Ordering Information
The device is available as the standard products shown in Table 5.
Table 5. Ordering Information
Marking
Description
Delivery Form
Package
AS1360-18-T
ASKD
HV low-quiescent current LDO, 1.8V
Tape and Reel
3-pin SOT23
AS1360-21-T
ASRO
HV low-quiescent current LDO, 2.1V
Tape and Reel
3-pin SOT23
AS1360-25-T
ASKE
HV low-quiescent current LDO, 2.5V
Tape and Reel
AS1360-30-T
ASKF
HV low-quiescent current LDO, 3.0V
Tape and Reel
AS1360-33-T
ASKG
HV low-quiescent current LDO, 3.3V
Tape and Reel
AS1360-40-T
ASQV
HV low-quiescent current LDO, 4.0V
Tape and Reel
AS1360-45-T
ASTQ
HV low-quiescent current LDO, 4.5V
Tape and Reel
3-pin SOT23
AS1360-50-T
ASKH
HV low-quiescent current LDO, 5.0V
Tape and Reel
3-pin SOT23
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Ordering Code
3-pin SOT23
3-pin SOT23
3-pin SOT23
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3-pin SOT23
Note: All products are RoHS compliant.
Buy our products or get free samples online at ICdirect: http://www.austriamicrosystems.com/ICdirect
Technical Support is found at http://www.austriamicrosystems.com/Technical-Support
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For further information and requests, please contact us mailto:sales@austriamicrosystems.com
or find your local distributor at http://www.austriamicrosystems.com/distributor
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Revision 1.07
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AS1360
Datasheet
Copyrights
Copyright © 1997-2011, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®.
All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of
the copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective companies.
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Disclaimer
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Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale.
austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding
the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at
any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for
current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range,
unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are
specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100
parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location.
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The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not
be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use,
interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing,
performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of
austriamicrosystems AG rendering of technical or other services.
Headquarters
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Contact Information
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austriamicrosystems AG
Tobelbaderstrasse 30
A-8141 Unterpremstaetten, Austria
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Tel: +43 (0) 3136 500 0
Fax: +43 (0) 3136 525 01
For Sales Offices, Distributors and Representatives, please visit:
http://www.austriamicrosystems.com/contact
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