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AMC7637
www.addmtek.com DESCRIPTION The AMC7637 is an ultra low quiescent current, and low dropout regulator rated for 300mA output current. The low power consumption and high accuracy is achieved through CMOS technology and internal trimmed reference voltage. The AMC7637 consists of a high-precision voltage reference, error correction circuit, and a current limit output driver. The fast transient response is an outstanding feature for applications with various loads. TYPICAL APPLICATION
VIN VOUT
ULTRA LOW IQ 300mA LOW DROPOUT REGULATOR
FEATURES Ultra low quiescent current of 15A in typical. Typical 2% internally trimmed output. Output current is excess of 300mA. Low Dropout Voltage. P-MOS output stage with low RDS(ON). Short circuit protection. Internal thermal overload protection. Available in 3-Lead surface mount SOT-23 package. APPLICATIONS
AMC7637
CIN 1F COUT 2.2F
Digital Camera Battery Powered Applications PDA Smart Phones
VOLTAGE OPTIONS AMC7637-1.5 AMC7637-1.8 AMC7637-2.5 AMC7637-3.0 AMC7637-3.3 1.5V Fixed 1.8V Fixed 2.5V Fixed 3.0V Fixed 3.3V Fixed
PACKAGE PIN OUT
VOUT VIN GND 3-Pin Plastic SOT-23 Surface Mount
ORDER INFORMATION TA ( C ) -40 to +85
DB
SOT-23 3-pin
AMC7637-X.XDBF (Lead Free)
Note: 1. All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number (i.e. AMC7637-X.XDBFT). Note: 2. The letter "F" is marked for Lead Free process.
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ABSOLUTE MAXIMUM RATINGS Input Voltage, VIN Maximum Operating Junction Temperature, TJ Storage Temperature Range Lead Temperature (soldering, 10 seconds)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. (Note)
8V 150C -65C to 150C 260C
THERMAL DATA Thermal Resistance from Junction to Ambient, JA
Junction Temperature Calculation: TJ = TA + (PD x JA). The JA numbers are guidelines for the thermal performance of the device/pc-board system. Connect the ground pin to ground using a large pad or ground plane for better heat dissipation. All of the above assume no ambient airflow. Maximum Power Calculation: PD(MAX)= TJ(MAX) - TA(MAX) JA TJ(OC): Maximum recommended junction temperature TA(OC): JA( C /W):
O
250 OC /W
Ambient temperature of the application Junction-to-Ambient temperature thermal resistance of the package, and other heat dissipating materials.
The maximum power dissipation for a single-output regulator is: PD(MAX) = [(VIN(MAX) - VOUT(NOM))] x IOUT(NOM) + VIN(MAX) x IQ Where: VOUT(NOM) = the nominal output voltage IOUT(NOM) = the nominal output current, and IQ = the quiescent current the regulator consumes at IOUT(MAX) VIN(MAX) = the maximum input voltage JA = (125 OC - TA)/PD
Then
BLOCK DIAGRAM
VIN
Current Limiter
VOUT
VREF
GND
Copyright (c) 2007 ADDtek Corp.
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RECOMMENDED OPERATING CONDITIONS Parameter Input Voltage Load Current (with adequate heat sinking) Input Capacitor (VIN to GND) Output Capacitor with ESR of 10 max. (VOUT to GND) Operating ambient temperature range Operating junction temperature
Note : VIN(MIN) = VOUT + VDROP
Symbol VIN IO
Min.
NOTE
Typ.
Max. 7 300
Units V mA F F O C O C
TA TJ
5 0.1 1.0 -40
85 125
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VIN = VO(TYP) + 1V, IO = 10mA, COUT = 2.2F, TA=25 OC, and are for DC characteristics only. testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.) (Low duty cycle pulse
Parameter Output Voltage Accuracy Line Regulation Load Regulation
Symbol VO VOI VOL IO = 10mA
Conditions VIN = (VO + 0.5V) to 8V 10mA IO 100mA 10mA IO 300mA VO(NOM)2.0V IO = 100mA VO=VO(NOM)-2.0% 2.0VVO(NOM) 1.3VVO(NOM)2.0V IO = 300mA 2.0VVO(NOM)2.8V VO=VO(NOM)-2.0% 2.8VO(NOM) IO = 10mA~300mA VIN = VOUT+ 0.5V IO=100mA, -40C TJ 125C
Min -2
Typ 0.1 15 45
Max +2 0.3 30 80 300 200 1300 600 500 30
Units % %/V mV
Dropout Voltage
VDROP
mV
Ground Pin Current Current Limit Output Voltage Temperature Coefficient
IQ ICL
15 350 100
A mA ppm/OC
Copyright (c) 2007 ADDtek Corp.
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CHARACTERIZATION CURVES VIN= 5VCIN=1FCOUT= 2.2FTA=25 OC unless otherwise specified.
Load Regulation vs. Load Current
50
50
Load Regulation vs. Load Current AMC7637-3.3
Load Regulation (mV) 40 30 20 10 0
AMC7637-2.5V
Load Regulation (mV) 40 30 20 10 0 100 150 200 250 300 350
100
150
200
250
300
350
Load Current (mA)
Load Current (mA)
Output Voltage vs. Supply Voltage
2.60 2.58 Output Voltage (V) 2.55 2.53 2.50 2.48 2.45 2.43 2.40 3.5 4.5 5.5 6.5 7.5
3.40
Output Voltage vs. Supply Voltage
3.38 Output Voltage (V) 3.35 3.33 3.30 3.28 3.25 3.23 3.20 3.5 4.5 5.5 6.5 7.5
AMC7637-2.5V
AMC7637-3.3V
Supply Voltage (V)
Supply Voltage (V)
Ground Current vs. Load Current
30
Ground Current vs. Load Current
30
AMC7637-2.5V
Ground Current (uA)
AMC7637-3.3V
25 Ground Current (uA) 20 15 10 5 0
25 20 15 10 5 0 0 100 200 300 400 500
0
100
200
300
400
500
Load Current (mA)
Load Current (mA)
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Dropout Voltage vs. Output Voltage
800 700 Dropout Voltage (mV) 600 500 400 300 200 100 0 1.5 1.8 2.5 3.3 Output Voltage (V) Dropout Voltage (mV) 800 700
Dropout Voltage vs. Load Curent
V OUT =1.8V V OUT =1.5V
Io=300mA Io=200mA Io=100mA
600 500 400 300 200 100 0 0 50 100
V OUT =2.5V V OUT =3.3V
150
200
250
300
Load Current
Output Voltage vs. Tem perature
3.40 3.35 Output Voltage (V) 3.30 3.25 3.20 3.15 3.10 -40 -20 0 20 40 60 80 100 120 140 160
AMC7637-3.3V V IN=5V IO=100m A
IO=300m A
Temperature ( C)
Load Transient Response
VIN=5V, CIN=1uF, COUT=2.2uF,TA=25
Load Transient Response
VIN=5V, CIN=1uF, COUT=2.2uF,TA=25
VO (100mV/DIV)
VO (100mV/DIV) IO (200mA/DIV)
AMC7637-2.5
AMC7637-3.3
IO= 10mA - 300mA
IO (200mA/DIV)
IO= 10mA - 300mA
SR=2mA/us
TIME= 200 us/DIV
SR=2mA/us
TIME= 200 us/DIV
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PACKAGE
Symbol
XX: Output Voltage Options
JTXXY
15 = 1.5V, 18 = 1.8V, 25 = 2.5V, 30 = 3.0V, 33 = 3.3V Y: A/T Site
Surface Mount SOT-23
INCHES
D C L H
MILLIMETERS MAX MIN 1.00 0.00 0.70 0.35 0.10 2.70 1.40 TYP 1.10 0.80 0.40 0.15 2.90 1.60 1.90 TYP. 2.60 0.37 1 2.80 5 3.00 9 MAX 1.30 0.10 0.90 0.50 0.25 3.10 1.80
MIN A A1 A2 b C
TYP
0.039 0.043 0.051 0.000 0.004
E
0.028 0.032 0.035 0.014 0.016 0.020 0.004 0.005 0.010 0.106 0.114 0.122 0.055 0.063 0.071 0.075 TYP. 0.102 0.110 0.118 0.015 1 5 9
e
M
D E e
A2
A A1 b
H L M
Surface Mount SOT-23 Carrier Dimensions
A B M E
MILLIMETERS
D F
A B C
4.0 0.1 2.0 0.05 4.0 0.1 2.5 0.05 1.75 0.1 6.0 0.2
M N
1.5 0.1 1.1 0.1
N C
D E F
DIRECTION OF FEED
Copyright (c) 2007 ADDtek Corp.
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IMPORTANT NOTICE
ADDtek reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. ADDtek integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of ADDtek products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. ADDtek assumes to no liability to customer product design or application support. ADDtek warrants the performance of its products to the specifications applicable at the time of sale.
ADDtek Corp. 9F, No. 20, Sec. 3, Bade Rd., Taipei, Taiwan, 105 TEL: 2-25700299 FAX: 2-25700196
Copyright (c) 2007 ADDtek Corp.
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