ADDtek AMC887-2.85DBT Low noise 150ma low dropout regulator Datasheet

AMC8878/8879
LOW NOISE 150mA
LOW DROPOUT REGULATOR
www.addmtek.com
DESCRIPTION
FEATURES
The AMC8878/8879 series 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 AMC8878/8879 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. Both AMC8878 and
AMC8879 come in a miniature 5-pin SOT-23 package.
„
„
„
„
„
„
„
„
„
Low output noise: 30µVRMS
Industry standard’2982 pin assignment
(AMC8878)
Output voltage precision of ±1.4% accuracy
Very low dropout voltage: 50mV/50mA and
165mV/150mA
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
(AMC8878) and TK111xxS (AMC8879) series.
APPLICATIONS
„
„
„
„
„
„
PACKAGE PIN OUT
Cellular Telephones
Battery Powered Systems
Hand-Held Instruments
Pagers
Personal Data Assistance (PDA)
PCMCIA Cards
VIN
1
5
VOUT
GND 2
SHDN 3
5 VIN
SHDN 1
GND 2
4
BP
4 VOUT
BP 3
AMC8878
AMC8879
5-Pin Plastic SOT-23
Surface Mount
(Top View)
ORDER INFORMATION
Plastic SOT-23
5-pin
O
O
0 C ≤ TA≤ 70 C AMC8878-X.XDBT
0OC ≤ TA≤ 70OC AMC8878-X.XDBTF(Lead Free)
Temperature
Range
Plastic SOT-23
5-pin
AMC8879-X.XDBT
AMC8879-X.XDBTF(Lead Free)
DBT
DBT
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 © 2006 ADDtek Corp.
Symbolization
AMC8878
AB18
AB20
AB25
AB28
AB2U
AB30
AB32
AB33
AB50
1
AMC8879
AC18
AC20
AC25
AC28
AC2U
AC30
AC32
AC33
AC50
DD067_G
-- JUNE 2006
AMC8878/8879
TYPICAL APPLICATION
VIN
2.5V to 6V
VOUT
CIN
1µF
AMC8878
AMC8879
COUT
1µF
ON
OFF
CBP
0.01µF
ABSOLUTE MAXIMUM RATINGS
(Note)
12V
150 OC
-65 OC to +150 OC
+260 OC
150 mW
Input Voltage, VIN
Operating Junction Temperature, TJ
Storage Temperature Range
Lead Temperature (soldering, 10 seconds)
Power Dissipation, PD @ TA = 70 OC
Note:
Exceeding these ratings could cause damage to the device.
negative out of the specified terminal.
All voltages are with respect to Ground. Currents are positive into,
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:
– TA(MAX)
T
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 © 2006 ADDtek Corp.
2
DD067_G --
JUNE 2006
AMC8878/8879
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
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Input Voltage
VIN
2.5
6.5
Load Current
IO
5
150
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.
Copyright © 2006 ADDtek Corp.
3
DD067_G --
JUNE 2006
AMC8878/8879
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
AMC8878/8879
Test Conditions
Output Voltage Accuracy
∆VOUT
Maximum Output Current
IOUT
Min
-1.4
-3
150
Current Limit
ILIMIT
160
Ground Pin Current
Dropout Voltage
Line Regulation
Load Regulation
Ripple Rejection
Output Voltage Noise
Shutdown Input Threshold High
Shutdown Input Threshold Low
IQ
VDROP
∆VOI
∆VOL
PSRR
IOUT = 10mA, TA = +25 OC
IOUT = 10 to 150mA
IOUT = 10mA
IOUT = 150mA
IOUT = 1mA
IOUT = 50mA
IOUT = 150mA
VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA -0.15
IOUT = 10 to 120mA, COUT = 1µF
f=100Hz, IL=100uA
en
f = 10Hz - 100KHz,
CBP = 0.01µF
VSIH
VSIL
VIN = 2.5V to 5.5V
VIN = 2.5V to 5.5V
COUT = 10µF
COUT = 100µF
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
Max
+1.4
+2
Units
%
mA
mA
1.6
1.7
1.1
50
165
0
0.01
50
30
20
10
µA
120
mV
0.15
0.04
%/V
%/mA
dB
µVRMS
2.0
O
Shutdown Supply Current
Typ.
TA = +25 C
TA = +85 OC
TA = +25 OC
TA = +85 OC
0.01
0.2
0.01
0.5
TA = +25 OC
TA = +85 OC
6
6
+150
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 © 2006 ADDtek Corp.
4
DD067_G --
JUNE 2006
AMC8878/8879
CHARACTERIZATION CURVES
VIN=VOUT(NOMINAL) + 0.5V or 2.5V(whichever is greater), CIN=1uF, COUT=1uF,CBP=0.01uF, TA=+25 OC,
Using plused ON time,unless otherwise noted.
Quiescent Current v.s. Output Current
Output Voltage v.s. Output Current
3.5
2
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
Quiescent Current (µA)
Output Voltage (V)
3.5
3.3
IO=150mA
3.2
3.1
2.4
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
Quiescent Current (µA)
2.4
3.48
VOUT=3.3V
3.44
Output Voltage
(V)
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 © 2006 ADDtek Corp.
45
5
DD067_G --
JUNE 2006
AMC8878/8879
CHARACTERIZATION CURVES (Continued))
VIN=VOUT(NOMINAL) + 0.5V or 2.5V(whichever is greater), CIN=1uF, COUT=1uF,CBP=0.01uF, TA=+25 OC,
Using plused ON time,unless otherwise noted.
Dropout Voltage v.s. Temperature
Dropout Voltage v.s. Output Current
Dropout Voltage (V)
Dropout Voltage (V)
0.3
0.24
0.22
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
IO=150mA
0.25
0.2
0.15
0.1
0.05
0
0
25
50
75
100
125
150
0
25
45
Output Current (mA)
105
75mA/ Div
IO
COUT=1uF
IO
50mV/ Div
25mA/ Div
50mV/ Div
COUT=1uF
VO
VO
Time=2ms
Time=2ms
Entering Shutdown,
No Load
0.5V/ Div
2V/ Div
VOUT=3.3V
VSHDN
1V/ Div
Line Transient Response,
With IO=50mA
1V/ Div
85
Load Transient Response
with IO=150mA
Load Transient Response
with IO=50mA
VOUT
Time=2ms
Time=1ms
Copyright © 2006 ADDtek Corp.
65
Temperature (OC)
6
DD067_G --
JUNE 2006
AMC8878/8879
CHARACTERIZATION CURVES (Continued))
VIN=VOUT(NOMINAL) + 0.5V or 2.5V(whichever is greater), CIN=1uF, COUT=1uF,CBP=0.01uF, TA=+25 OC,
Using plused ON time,unless otherwise noted.
Shutdown Exit Delay,
CBP= 2pF
2V/ Div
VSHDN
VOUT
1V/ Div
1V/ Div
2V/ Div
Shutdown Exit Delay,
CBP= 0.1uF
IO=50mA
VOUT=3..3V
Time=2ms
Copyright © 2006 ADDtek Corp.
VSHDN
VOUT
IO=50mA
VOUT=3..3V
Time=200µs
7
DD067_G --
JUNE 2006
AMC8878/8879
PACKAGE
5-Pin SOT-23
SEATING PLANE
D
INCHES
b
L
E
L1
E1
MIN
TYP
MAX
MIN
TYP
MAX
A
-
-
0.057
-
-
1.45
A1
-
-
0.006
-
-
0.15
0.90
1.15
1.30
A2 0.035 0.045 0.051
c
e
MILLIMETERS
L2
b
0.012
-
0.020
0.30
-
0.50
c
0.003
-
0.009
0.08
-
0.22
D
0.114 BSC
2.90 BSC
E
0.110 BSC
2.80 BSC
E1
0.063`BSC
1.60 BSC
e
0.037 BSC
0.95 BSC
e1
0.075BSC
1.90 BSC
L
0.012 0.018 0.024
L1
0.024 REF
0.60 REF
L2
0.010 BSC
0.25 BSC
e1
GAUGE PLANE
M
A
A2
A1
M
°M
Copyright © 2006 ADDtek Corp.
8
5°
10°
15°
0.30
5°
0.45
10°
DD067_G --
0.60
15°
JUNE 2006
AMC8878/8879
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 © 2006 ADDtek Corp.
9
DD067_G --
JUNE 2006
Similar pages