ETC AMC8877

AMC DOC. #:AMC8878_A (LF)
Jun 2004
®
AMC8877
ADD MICROTECH CORP.
LOW NOISE 300mA
LOW DROPOUT REGULATOR
DESCRIPTION
FEATURES
Low output noise: 30µVRMS
Industry standard’2982 pin assignment
(AMC8877)
Output voltage precision of ±1.4% accuracy
Very low dropout voltage: 50mV/50mA,
165mV/150mA & 450mV/300mA
On/Off control
Low IQ: 1.6µA
Short circuit protection
Internal thermal overload protection
Available in surface mount 5-pin SOT-23 package.
Enhanced pin-to-pin Compatible to the MAX8878
(AMC8877).
The AMC8877 product is a low noise, low dropout
linear regulator operating from 2.5V to 6.5V input.
An external capacitor can be connected to the
bypass pin to lower the output noise level to
30µVRMS.
Designed with a P-channel MOSFET output
transistor, the AMC8877 consume a low supply
current, independent of the load current and
dropout voltage. The internal thermal shut down
circuit will limits the junction temperature to
below 150°C. Other features include thermal
protection, reverse battery protection and output
current limit. The AMC8877 come in a miniature
5-pin SOT-23 package.
APPLICATIONS
PACKAGE PIN OUT
Cellular Telephones
Battery Powered Systems
Hand-Held Instruments
Pagers
Personal Data Assistance (PDA)
PCMCIA Cards
VIN
1
5
VOUT
4
BP
GND 2
SHDN 3
AMC8877
5-Pin Plastic SOT-23
Surface Mount
(Top View)
ORDER INFORMATION
Plastic
SOT-23
Temperature
DBT
Range
5-pin
O
O
0 C ≤ TA≤ 70 C AMC8877-X.XDBT
0OC ≤ TA≤ 70OC AMC8877-X.XDBTF(Lead Free)
EXPANDED ORDER INFORMATION
Device Name
Output Voltage
AMC887‫ڤ‬-1.8DBT
AMC887‫ڤ‬-2.0DBT
AMC887‫ڤ‬-2.5DBT
AMC887‫ڤ‬-2.8DBT
AMC887‫ڤ‬-2.85DBT
AMC887‫ڤ‬-3.0DBT
AMC887‫ڤ‬-3.2DBT
AMC887‫ڤ‬-3.3DBT
AMC887‫ڤ‬-5.0DBT
1.8V
2.0V
2.5V
2.8V
2.85V
3.0V
3.2V
3.3V
5.0V
Copyright © 2002, ADD Microtech Corp.
Symbolization
AMC8877
CG18
CG20
CG25
CG28
CG2U
CG30
CG32
CG33
CG50
1
www.addmtek.com
AMC8877
AMC DOC. #: AMC8877_A (LF)
Jun 2004
LOW NOISE 300mA
LOW DROPOUT REGULATOR
TYPICAL APPLICATION
VIN
2.5V to 6V
VOUT
CIN
1µF
AMC8877
COUT
1µF
ON
OFF
CBP
0.01µF
ABSOLUTE MAXIMUM RATINGS
(Note)
12V
Input Voltage, VIN
150 OC
Operating Junction Temperature, TJ
Storage Temperature Range
-65 OC to +150 OC
Lead Temperature (soldering, 10 seconds)
+260 OC
O
Power Dissipation, PD @ TA = 70 C
150 mW
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.
THERMAL DATA
DB PACKAGE:
Thermal Resistance from Junction to Ambient, θ JA
220 OC /W
Junction Temperature Calculation: TJ = TA + (PD × θ JA).
The θJA 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:
T
– TA(MAX)
PD(MAX)= J(MAX)
θJA
TJ(OC): Maximum recommended junction temperature
TA(OC): Ambient temperature of the application
θJA(OC /W): Junction-to-junction 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))] × IOUT(NOM) + VIN(MAX) × 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
Then θJA = (+150 OC – TA)/PD
Copyright © 2002, ADD Microtech Corp.
2
www.addmtek.com
AMC8877
AMC DOC. #: AMC8877_A (LF)
Jun 2004
LOW NOISE 300mA
LOW DROPOUT REGULATOR
BLOCK DIAGRAM
VIN
Reverse
Battery
Protection
SHDN
Shutdown
And
Power-On
Control
Thermal
Sensor
Current
Limit
VOUT
VREF
GND
BP
PIN DESCRIPTION
Pin Number
AMC8878 AMC8879
1
5
2
2
Pin Name
Pin Function
VIN
GND
Input
Ground
Logic control shutdown pin; HI: Device is ON, LO: Device is OFF
Noise bypass pin; The output noise level can be reduced to 30µVRMS by
connecting external capacitors
Output
3
1
SHDN
4
3
BP
5
4
VOUT
Copyright © 2002, ADD Microtech Corp.
3
www.addmtek.com
AMC8877
AMC DOC. #: AMC8877_A (LF)
Jun 2004
LOW NOISE 300mA
LOW DROPOUT REGULATOR
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Input Voltage
VIN
2.5
6.5
Load Current
IO
5
300
Input Capacitor (VIN to GND)
1.0
Output Capacitor with ESR of 10Ω max., (VOUT to GND)
1.0
Units
V
mA
µF
µF
Note:
1. CIN: A 1.0 µF capacitor (or larger) should be placed between VIN to GND.
2. COUT: A 1.0 µF (or larger) capacitor is recommended between VOUT and GND for stability and improving the regulator’s transient response. The
ESR (Effective Series Resistance.) of this capacitor has no effect on regulator stability, but low ESR capacitors improve high frequency transient
response. The value of this capacitor may be increased without limit, but values larger than 10uF tend to increase the settling time after a step
change in input voltage or output current. The part may oscillate without the capacitor. Any type of capacitor can be used, but not Aluminum
electrolytics when operating below -25 OC, The capacitance may be increased without limit.
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the operating ambient temperature of 0°C to +70 °C with
VIN = VOUT(NOMIAL) + 0.5V, and are for DC characteristics only. (Low duty cycle pulse testing techniques are used
which maintains junction and case temperatures equal to the ambient temperature.)
Parameter
Symbol
Output Voltage Accuracy
∆VOUT
Maximum Output Current
IOUT
Current Limit
ILIMIT
Ground Pin Current
IQ
Dropout Voltage
VDROP
Line Regulation
Load Regulation
Ripple Rejection
Output Voltage Noise
Shutdown Input Threshold High
Shutdown Input Threshold Low
Shutdown Supply Current
∆VOI
∆VOL
PSRR
en
VSIH
VSIL
AMC8877
Test Conditions
Min
-1.4
-3
IOUT = 10mA, TA = +25 OC
IOUT = 10 to 300mA
Typ.
Max
+1.4
+2
300
VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA -0.15
IOUT = 10 to 300mA, COUT = 10µF
f=100Hz, IL=100uA
f = 10Hz - 100KHz,
CBP = 0.01µF
COUT = 10µF
COUT = 100µF
VIN = 2.5V to 5.5V
VIN = 2.5V to 5.5V
IQ(SHDN)
VOUT = 0V
Shutdown Input Bias Current
ISHDN
VSHDN = VIN
Shutdown Exit Delay
tdelay
CBP = 0.1µF,
COUT = 1µF, No load
Thermal Shutdown Temperature
TSHDN
mA
1.6
1.7
50
165
450
0
40
50
30
20
9
9
120
300
650
0.15
80
TA = +25 OC
TA = +85 OC
TA = +25 OC
TA = +85 OC
0.01
0.2
0.01
0.5
TA = +25 OC
6
6
+150
TA = +85 C
µA
mV
%/V
mV
dB
µVRMS
2.0
O
%
mA
330
IOUT = 10mA
IOUT = 300mA
IOUT = 50mA
IOUT = 150mA
IOUT = 300mA
Units
0.4
1
100
V
V
µA
nA
ms
O
C
Note:
1. Current limit is measured at constant junction temperature, using pulse ON time.
2. Dropout is measured at constant junction temperature, using pulse ON time, and criterion is VOUT inside target value ± 2 %.
3. Regulation is measured at constant junction temperature, using pulsed ON time.
Copyright © 2002, ADD Microtech Corp.
4
www.addmtek.com
AMC8877
AMC DOC. #: AMC8877_A (LF)
Jun 2004
LOW NOISE 300mA
LOW DROPOUT REGULATOR
Characterization Curves
VIN=VOUT(NOMINAL) + 0.5V or 2.5V(whichever is greater), CIN=1uF, COUT=1uF,CBP=0.01uF, TA=+25
O
C, ,Using plused ON time,unless otherwise noted.
Quiescent Current v.s. Output Current
Output Voltage v.s. Output Current
2
3.5
Quiescent Current (µA)
Output Voltage(V)
VOUT=3.3V
3.4
3.3
3.2
3.1
3
2.9
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
2.8
0
20
40
60
80
100
120
0
140
25
50
75
100
125
150
Output Current (mA)
Output Current (V)
Output Voltage v.s. Input Voltage
Quiescent Current v.s. Input Voltage
IO=10mA
3.4
VOUT=3.3V
2.4
Quiescent Current (µA)
Output Voltage (V)
3.5
3.3
IO=150mA
3.2
3.1
2.2
2
IO=150mA
1.8
1.6
1.4
IO=10mA
1.2
3
4
4.5
5
5.5
6
1
Input Voltage (V)
4
4.5
5
5.5
6
Input Voltage (V)
Output Voltage v.s. Temperature
Quiescent Current v.s. Temperature
2.4
VOUT=3.3V
Quiescent Current (µA)
Output Voltage (V)
3.48
3.44
IO=10mA
3.4
3.36
3.32
3.28
3.24
IO=150mA
3.2
2.2
2
1.8
1.6
1.4
1.2
1
25
45
65
85
105
25
65
85
105
Temperature (OC)
Temperature (OC)
Copyright © 2002, ADD Microtech Corp.
45
5
www.addmtek.com
AMC8877
AMC DOC. #: AMC8877_A (LF)
Jun 2004
LOW NOISE 300mA
LOW DROPOUT REGULATOR
Characterization Curves (Continued))
VIN=VOUT(NOMINAL) + 0.5V or 2.5V(whichever is greater), CIN=1uF, COUT=1uF,CBP=0.01uF, TA=+25
O
C, ,Using plused ON time,unless otherwise noted.
Dropout Voltage v.s. Temperature
Dropout Voltage v.s. Output Current
0.3
IO=150mA
0.22
Dropout Voltage (V)
Dropout Voltage (V)
0.24
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0.25
0.2
0.15
0.1
0.05
0
0
25
50
75
100
125
150
0
25
Output Current (mA)
85
105
Temperature ( C)
Load Transient Response
with IO=150mA
75mA/ Div
COUT=1uF
25mA/ Div
65
O
Load Transient Response
with IO=50mA
IO
50mV/ Div
VO
50mV/ Div
45
COUT=1uF
IO
VO
Time=2ms
Time=2ms
ILOAD = 300mA VIN = 3V
Load
No Load
Copyright © 2002, ADD Microtech Corp.
6
www.addmtek.com
AMC8877
AMC DOC. #: AMC8877_A (LF)
Jun 2004
LOW NOISE 300mA
LOW DROPOUT REGULATOR
300mA
(Vo~Vp)
300mA
(Vo~Vp)
3.16V
(Vo~-Vp)
3.12V
(Vo~-Vp)
Line Transient Response,
With IO=50mA
Entering Shutdown,
No Load
0.5V/ Div
Time=1ms
2V/ Div
VOUT
1V/ Div
2V/ Div
Shutdown Exit Delay,
CBP= 2pF
VSHDN
IO=50mA
VOUT=3..3V
Time=2ms
Copyright © 2002, ADD Microtech Corp.
VOUT
Time=2ms
Shutdown Exit Delay,
CBP= 0.1uF
1V/ Div
VSHDN
1V/ Div
1V/ Div
2V/ Div
VOUT=3.3V
VSHDN
VOUT
IO=50mA
VOUT=3..3V
Time=200µs
7
www.addmtek.com
AMC8877
AMC DOC. #: AMC8877_A (LF)
Jun 2004
LOW NOISE 300mA
LOW DROPOUT REGULATOR
5-Pin SOT-23
SEATING PLANE
D
L
E
MIN
TYP
MAX
MIN
TYP
MAX
A
-
-
0.057
-
-
1.45
A1
-
-
0.006
-
-
0.15
L1
E1
A2 0.035
c
e
L2
e1
GAUGE PLANE
M
b
0.012
c
0.003
A1
M
8
0.90
1.15
1.30
0.020
0.30
-
0.50
-
0.009
0.08
-
0.22
2.90 BSC
E
0.110 BSC
2.80 BSC
E1
0.063`BSC
1.60 BSC
e
0.037 BSC
0.95 BSC
0.075BSC
0.012
0.018
1.90 BSC
0.024
0.30
0.45
L1
0.024 REF
0.60 REF
L2
0.010 BSC
0.25 BSC
°M
Copyright © 2002, ADD Microtech Corp.
0.051
-
0.114 BSC
L
A2
0.045
D
e1
A
MILLIMETERS
INCHES
b
5°
10°
15°
5°
10°
0.60
15°
www.addmtek.com
AMC8877
AMC DOC. #: AMC8877_A (LF)
Jun 2004
LOW NOISE 300mA
LOW DROPOUT REGULATOR
IMPORTANT NOTICE
ADD Microtech (ADDM) 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. ADDM 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
ADDM 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.
ADDM assumes to no liability to customer product design or application support. ADDM warrants the performance of
its products to the specifications applicable at the time of sale.
U.S.
Asia Pacific region
ADD Microtech Inc.
492 Altamont Drive
Milpitas, CA 95035
ADD Microtech Corp
13F, NO. 287, Sec. 3, Nan Jing E. Rd.,
Taipei, Taiwan 105
T E L : (408) 9410420
FA X : (408) 9410864
T E L : 2-27132800
FA X : 2-27132805
Copyright © 2002, ADD Microtech Corp.
9
www.addmtek.com