AMC7635
www.addmtek.com
DESCRIPTION
The AMC7635 of positive, linear regulator features low
noise and low dropout voltage, making it ideal for battery
applications. The space-saving SOT-23-5 and TSOT-23-5
packages are attractive for "Pocket" and "Hand Held"
applications.
In applications requiring a low noise, regulated supply,
place a 1000pF capacitor between Bypass and Ground.
The AMC7635 is stable with an output capacitance of
2.2µF or greater.
TYPICAL APPLICATION CIRCUIT
V
IN
V
IN
V
OUT
300mA CMOS
L
OW
D
ROP
O
UT
R
EGULATOR
FEATURES
Guaranteed 300mA Output
Accurate to within 1.5%
Very Low Dropout Voltage
Over-Temperature Shutdown
Power-Saving Shutdown Mode
Current Limiting
Noise Reduction Bypass Capacitor
Factory Pre-set Output Voltages
Low Temperature Coefficient
Available in SOT-23-5 and TSOT-23-5 packages
APPLICATIONS
Wireless Devices
V
OUT
Portable Electronics
Cordless Phones
PC Peripherals
Battery Powered Widgets
Electronic Scales
Instrumentation
AMC7635
C
IN
1uF
BP
C
BP
1000pF
GND
EN
C
OUT
2.2uF
GND
VOLTAGE OPTIONS
AMC7635-1.5
AMC7635-1.8
AMC7635-2.0
AMC7635-2.5
AMC7635-2.7
AMC7635-2.8
AMC7635-2.85
AMC7635-2.9
AMC7635-3.0
AMC7635-3.1
AMC7635-3.3
1.5V Fixed
1.8V Fixed
2.0V Fixed
2.5V Fixed
2.7V Fixed
2.8V Fixed
2.85V Fixed
2.9V Fixed
3.0V Fixed
3.1V Fixed
3.3V Fixed
PACKAGE PIN OUT
V
IN
GND
EN
1
2
3
5
V
OUT
4
BP
5-Pin Plastic SOT-23-5
5-Pin Plastic TSOT-23-5
Surface Mount
(Top View)
ORDER INFORMATION
DB
Plastic SOT-23-5
5-pin
AMC7635-x.xDBFT (Lead Free)
Y
Plastic TSOT-23-5
5-pin
AMC7635-x.xYGT (Green)
Note: 1. All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e. AMC7635-x.xDBFT).
2. The letter “F” is marked for Lead Free process, and ”G” is marked for Green process.
3. For other output voltage rankings, please consult sales or FAEs.
Copyright
©
2009 ADDtek Corp.
1
DD078_E -- JUNE 2009
AMC7635
BLOCK DIAGRAM
V
IN
1
Over Current
Shutdown
Thermal
Shutdown
5
V
OUT
EN
3
BP
4
－
AMP
＋
R1
V
REF
R2
2
GND
ABSOLUTE MAXIMUM RATINGS
Input Voltage, V
IN
Operating Junction Temperature Range, T
J
Storage Temperature Range, T
STG
Lead Temperature (soldering, 10 seconds)
(Note)
7V
150
°C
-65°C to 150°C
260°C
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.
POWER DISSIPATION TABLE
DB/Y PACKAGE:
Thermal Resistance from Junction to Ambient,
θ
JA
220
°C
/W
Junction Temperature Calculation: T
J
= T
A
+ (PD ×θ
JA
).
The
θ
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.
RECOMMENDED OPERATING CONDITIONS
Parameter
Input Voltage
Load Current (with adequate heat-sinking)
Operating Ambient Temperature
Operating Junction Temperature
Symbol
V
IN
I
O
T
A
T
J
Min.
V
OUT
+∆V
5
-20
Typ.
Max.
6
300
+85
+125
Units
V
mA
°C
°C
Copyright
©
2009 ADDtek Corp.
2
DD078_E -- JUNE 2009
AMC7635
ELECTRICAL CHARACTERISTICS
V
IN
= V
OUT(Nominal)
＋0.5V,
V
IN,MAX
= 6V, T
A
= 25°C (unless otherwise noted)
Parameter
Output Voltage Accuracy
Symbol
V
OUT
∆V
OUT
∆V
I
V
OUT
∆V
OUT
I
O
= 1mA
I
O
= 1 to 300mA
I
O
= 1mA, V
OUT
+ 0.5V < V
IN
< 6V
1mA
≤
I
O
≤
300mA
V
OUT(NOM)
≤
2.0V
I
O
=150mA,
V
OUT
=V
OUT(NOM)
-2.0%
Dropout Voltage
∆V
2.0V<V
OUT(NOM)
≤2.5V
V
OUT(NOM)
>
2.5V
V
OUT
≤
2.0V
I
O
=300mA,
V
OUT
＝V
OUT(NOM)
-2.0% 2.0V<V
OUT
≤2.5V
V
OUT
>
2.5V
Maximum Output Current
Current Limit
I
O
I
LIMIT
V
OUT
>
0.96 × V
RATING
V
OUT
>
1.2V
I
O
= 0mA ~ 10mA
Ground Pin Current
I
Q
I
O
= 10mA ~ 150mA
I
O
= 150mA ~ 300mA
Output Shutdown Delay
EN “high” Bias Current
EN “low” Bias Current
Shutdown Supply Current
EN “low” Input Threshold
EN “high” Input Threshold
Power Supply Rejection
Ratio
Thermal Protection
Temperature
Thermal Protection
Temperature Hysteresis
Note 1:
Note 2:
Test Conditions
Min Typ Max Units
-1.5
-2.5
+1.5
+2.5
%
Line Regulation
Load Regulation
0.15 0.35 %/V
10
330
220
165
70
500
350
250
1300
900
600
300
300
400
50
100
120
600
0.1
0.5
0.01
0
2
1
0.4
V
IN
60
50
40
150
°C
30
dB
100
150
180
µS
uA
µA
V
µA
mA
mV
mV
C
BP
= 0µF, C
OUT
= 1µF, I
O
= 100mA
I
IH
I
IL
V
EN
= V
IN
V
EN
= 0V
V
EN
= GND
V
IL
V
IH
V
IN
= 2.5 to 5.5V
V
IN
= 2.5 to 5.5V
I
O
=100mA
C
BP
=0.01uF
C
OUT
=2.2uF
f = 1kHz
f = 10kHz
f = 100kHz
PSRR
For the adjustable device, the minimum load current is the minimum current required to maintain regulation. Normally the current in
the resistor divider used to set the output voltage is selected to meet the minimum load current requirement.
These parameters, although guaranteed, are not tested in production.
3
DD078_E -- JUNE 2009
Copyright
©
2009 ADDtek Corp.
AMC7635
CHARACTERIZATION CURVES
Unless otherwise specified, V
IN
= 5V, C
IN
= 1µF, C
BP
= 0.01uF, C
OUT
= 2.2µF, T
A
= 25
°C.
Chip Enable Transient Response
V
IN
=5V, C
IN
=1uF, C
OUT
=2.2uF, C
BP
=1000pF
Enable (2V/DIV)
Enable (2V/DIV)
Output (1V/DIV)
R
LOAD
=10Ω
TIME= 1 ms/DIV
Chip Enable Transient Response
V
IN
=5V, C
IN
=1uF, C
OUT
=2.2uF, C
BYP
=Open
Output (1V/DIV)
R
LOAD
=10Ω
TIME= 1 ms/DIV
AMC7635-3.3
AMC7635-3.3
Short Circuit Response
V
IN
=5V, C
IN
=1uF, C
OUT
=2.2uF,C
BP
=0.01uF
R
Load
=100Ω
R
Short
=0.1Ω
I
O
(1A/DIV)
Over Temperature Shutdown
V
IN
=5V, C
IN
=1uF, C
OUT
=2.2uF,C
BYP
=0.01uF
R
Load
=6.6Ω
I
O
(200mA/DIV)
AMC7635-3.3
V
OUT
(1V/DIV)
TIME= 20 ms/DIV
V
OUT
(1V/DIV)
TIME= 400 ms/DIV
Load Step (1mA~300mA)
V
IN
=5V, C
IN
=2.2uF, C
OUT
=2.2uF, C
BYP
=0.01uF
AMC7635-3.3
V
O
(10mV/DIV)
V
IN
(1V/DIV)
V
O
(10mV/DIV)
I
O
= 1mA ~ 300mA
Line Transient Response
V
IN,AVE
=5V, C
IN
=2.2uF, C
OUT
=2.2uF, C
BYP
=0.01uF
I
O
(200mA/DIV)
AMC7635-3.3
TIME= 2 ms/DIV
TIME= 10 ms/DIV
Copyright
©
2009 ADDtek Corp.
4
DD078_E -- JUNE 2009
AMC7635
Ground Pin Current vs. Tem perature
62.5
Quiescent Current@ 3.5V (uA)
90.00
75.00
85
℃
Ground Current vs. Input Voltage
60
Ground Current(uA)
60.00
45.00
25
℃
57.5
55
30.00
15.00
0.00
52.5
50
-40
-15
10
35
60
85
Temperature(
℃
)
0.0
1.4
2.8
4.2
5.6
7.0
Input Voltage(V)
Drop Out Voltage vs. Load Current
600.0
V
OUT
=1.5V
Sofe Operating Area
400
500.0
Dropout Voltage (mV)
400.0
300.0
200.0
100.0
0.0
0
50
100
150
V
OUT
=2.5V , V
OUT
=3.1V,
V
OUT
=2.8V , V
OUT
=3.3V,
V
OUT
=3.0
V
OUT
=2.0V
Output Current (mA)
V
OUT
=1.8V
300
T
A
=70
℃
200
T
A
=25
℃
100
0
300
200
250
0
1
2
3
4
5
6
7
Load Current(mA)
Input-Output Voltage Dif f erential (V)
Dropout Voltage vs. Tem perature
400
Dropout Voltage @ 300mA (mV)
600.0
500.0
Drop Out Voltage vs. Output Voltage
350
Dropout Voltage(mV)
400.0
Io=300mA
300
300.0
Io=200mA
200.0
Io=100mA
250
V
OUT
= 3.3V
I
OUT
= 300mA
200
-40
-15
10
35
60
85
Temperature(
℃
)
100.0
0.0
1.5
1.8
2.0
2.5
2.8
3.0
3.1
3.3
Output Voltage(V)
Copyright
©
2009 ADDtek Corp.
5
DD078_E -- JUNE 2009
