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AME
AME5248A
n General Description
The AME5248A is a fixed-frequency current mode synchronous PWM step down converter that is capable of delivering 600mA output current while achieving peak efficiency of 95%. Under light load conditions, the AME5248A operates in a power saving mode that consumes just around 20A of supply current, maximizing battery life in portable applications. The AME5248A operates with a fixed frequency of 1.5MHz, minimizing noise in noisesensitive applications and allowing the use of small external components. The AME5248A is an ideal solution for applications powered by Li-Ion batteries or other portable applications that require small board space. The AME5248A is available in a variety of fixed output voltage options, 1.0V, 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, 2.7V, 2.8V, and 3.3V, and is also available in an adjustable output voltage version capable of generating output voltages from 0.5V to V IN . The AME5248A is available in the tiny 5-pin SOT-25 and TSOT-25 package.
1.5MHz, 600mA Synchronous Buck Converter
n Applications
l Blue Tooth Headsets l Portable Audio Players l Mobile Phones l Wireless and DSL Modems l Digital Still Cameras l Portable Instruments
n Typical Application
V IN 2.5V to 5.5V IN C IN 4.7F SW L 4.7H VOUT
AME5248A
EN GND FB COUT 10F
n Features
l High Efficiency - Up to 95% l Very Low 20A Quiescent Current l Guaranteed 600mA Output Current l 1.5MHz Constant Frequency Operation PWM l Internal Synchronous Rectifier Eliminates Schottky Diode l Adjustable Output Voltages From 0.5V to VIN l Fixed Output Voltage Options Available 1.0V, 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, 2.7V, 2.8V and 3.3V l 100% Duty Cycle Low-Dropout Operation l 0.1A Shutdown Current l Require Tiny Capacitors and Inductor l Tiny SOT-25 and TSOT-25 Package l All AME's Lead Free Products Meet RoHS Standards
V IN 2.5V to 5.5V IN CIN 4.7F SW C1 22pF R1 470K COUT R2 10F 180K L 4.7H VOUT 1.8V/600mA
Figure 1. Fixed Voltage Regulator
AME5248A
EN GND FB
Figure 2. Adjustable Voltage Regulator
Rev.A.01
1
AME
AME5248A
Function Block Diagram
EN VIN
1.5MHz, 600mA Synchronous Buck Converter
Current Limit Comparaotr 1.5 MHz Oscillator OSC Current Sense Bandgap FB S UVLO Slope Comp
+ EA Fixed Output See Note
+ COMP -
R
Q Logic Control SW Driver
Thermal Shudown COMP
+ GND
Figure 3
Note: For the fixed output version the internal feedback divider is actived. For the adjustable version the internal feedback divider is disabled, and the FB pin is directly connected to the internal EA amplifer.
2
Rev.A.01
AME
AME5248A
n Pin Configuration
SOT-25/TSOT-25 Top View
5 4
1.5MHz, 600mA Synchronous Buck Converter
AME5248A-AEVxxx 1. IN 2. GND
AME5248
3. EN 4. FB/OUT 5. SW
1
2
3
Die Attach: Conductive Epoxy
n Pin Description
Pin Number
1 2
Pin Name
IN GND
Pin Description
Input Supply Voltage Pin. Bypass this pin with a capacitor as close to the device as possible Ground Tie directly to ground plane. Enable Control Input. The enable pin is an active high control. Tie this pin above 1.4V to enable the device. Tie this pin below 0.4V to shut down the device. In shutdown, all function are disabled. Do not leave EN pin floating. FB:Output voltage Feedback input. Set the output voltage by selecting values for R1 and R2 using: R1 = R2 (V OUT/0.5V -1) Connect the ground of the feedback network to an AGND (Analog Ground) plane which should be tied directly to the GND pin. OUT:Output Pin Switch Node Connection to Inductor.
3
EN
4
FB/OUT
5
SW
Rev.A.01
3
AME
AME5248A
n Ordering Information AME5248A - x x x xxx x
1.5MHz, 600mA Synchronous Buck Converter
Special Feature Output Voltage Number of Pins Package Type Pin Configuration
Pin Configuration A
(SOT-25) (TSOT-25)
Package Type E: SOT-2X
Number of Pins V: 5
Output Voltage
Special Feature
1. IN 2. GND 3. EN 4. FB/OUT 5. SW
ADJ: 100: 120: 130: 150: 180: 250: 270: 280: 330:
Adjustable 1.0V 1.2V 1.3V 1.5V 1.8V 2.5V 2.7V 2.8V 3.3V
N/A: SOT-25 L: TSOT-25 (Low Profile)
4
Rev.A.01
AME
AME5248A
n Available Options
Part Number
AME5248A-AEVADJ AME5248A-AEVADJL
1.5MHz, 600mA Synchronous Buck Converter
Marking*
BWNMXX BWNMXX
Output Voltage
ADJ ADJ
Package
SOT-25 TSOT-25
Operating Ambient Temperature Range
-40OC to +85OC -40OC to +85OC
Note: 1. The first 3 places represent product code. It is assigned by AME such as BWN. 2. A bar on top of first letter represents Green Part such as BWN. 3. The last 3 places MXX represent Marking Code. It contains M as date code in "month", XX as LN code and that is for AME internal use only. Please refer to date code rule section for detail information. 4. Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type.
Rev.A.01
5
AME
AME5248A
n Absolute Maximum Ratings
Parameter
Input Voltage EN, FB SW, VOUT ESD Classification
1.5MHz, 600mA Synchronous Buck Converter
Symbol
VIN VEN, VFB VSW , V OUT
Maximum
-0.3 to +6.5 -0.3 to VIN -0.3 to VIN B*
Unit
V V V
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. * HBM B:2000V~3999V
n Recommended Operating Conditions
Parameter
Ambient Temperature Range Junction Temperature Range Storage Temperature Range
Symbol
TA TJ TSTG
Rating
-40 to +85 -40 to +125 -65 to +150
Unit
o
C
n Thermal Information
Parameter
Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Solder Iron (10 Sec)** SOT-25* TSOT-25 Conductive Epoxy
Package
Die Attach
Symbol
JC JA PD
Maximum
81
Unit
o
C/W
260
400 350
mW
o
C
* Measure JC on backside center of molding compund if IC has no tab. ** MIL-STD-202G 210F
6
Rev.A.01
AME
AME5248A
n Electrical Specifications
VIN=3.6V, EN=VIN, TA = 25OC, unless otherwise noted
Parameter Input Voltage Symbol VIN VIN =2.5 to 5.5V, VOUT=1.0V 0A < IOUT < 600mA VIN =2.5 to 5.5V, VOUT=1.2V 0A < IOUT < 600mA VIN =2.5 to 5.5V, VOUT=1.5V 0A < IOUT < 600mA VIN =2.5 to 5.5V, VOUT=1.8V Output Voltage Accuracy (by every fixed output voltage) VOUT 0A < IOUT < 600mA VIN =VOUT+V to 5.5V (Note 1) VOUT=2.5V, 0A o o
1.5MHz, 600mA Synchronous Buck Converter
Test Condition
Min 2.5 -3 -3 -3 -3 -3 -3 -3 -3 -3 VFB 0.490 0.488 -50
Typ
Max 5.5 3 3 3 3 3 3 3 3 3 VIN 0.2
Units V
%
Output Voltage Accuracy (Adj) Adjustable Output Range
VOUT=3.3V, 0A V
Feedback Voltage Feedback Pin Bias Current
VFB IFB
0.5 0.5
0.510 0.512 50
V nA
VFB=0.45V or VOUT=90%, Quiescent Current IQ IOUT=0A VFB=0.52V or VOUT=104%, IOUT=0A Shutdown Current Reference Voltage Line Regulation Output Voltage Line Regulation Output Voltage Load Regulation ISHDN VFB REGLINE REGLOAD VEN=0V, VIN =4.2V 2.5OVIN O 5.5V 2.5OVIN O 5.5V IOUT=100mA to 600mA
300 20 0.1
400 35 1 0.4 0.4 %/V % A
0.5
Rev.A.01
7
AME
AME5248A
n Electrical Specifications (Contd.)
VIN=3.6V, EN=VIN, TA = 25OC, unless otherwise noted
Parameter High-side Switch On-Resistance Low-side Switch On-Resistance Switch Current Limit Symbol RDS,ON,HI RDS,ON,LO ISW,CL Test Condition ISW =100mA ISW =-100mA VIN=3V, VOUT=1.2V VEN =0V, VSW =0V or 3.6V, VIN =3.6V VFB=0.5V or VOUT=100% 1.2 1 Min Typ 0.4 0.35 1.25 Max 0.6 0.5 Units A A
1.5MHz, 600mA Synchronous Buck Converter
Switch Leakage Current
ISW,LK
0.01
1
Switch Frequency
fOSC
1.5
1.8 MHz
Short Circuit Oscillator Frequency Maximum Duty Cycle Input Undervoltage Lockout Input Undervoltage Lockout Hysteresis Enable High (Enabled the Device) Enable Low (Shutdown the Device) EN Input Current (Enable the Device) Thermal Shutdown Temperature Thermal Shutdown Hysteresis
fOSC,SCR DMAX VUVLO VUVLO,HYST VEN,HI VEN,LO IEN OTP OTH
VFB=0V or VOUT=0V 100 VIN Rising 2
0.21 % 2.15 0.1 1.4 0.4 0.01 1 A
o
2.3 V
Shutdown, temperature increasing Restore, temperature increasing
160 30
C
Note 1: V=IOUT x RDS.ON.HI
8
Rev.A.01
AME
AME5248A
n Detailed Description
Main Control Loop The AME5248A utilizes a fixed-frequency,current-mode PWM control scheme combined with fully-integrated power MOSFETs to produce a compact and efficient stepdown DC-DC solution. During normal operation the highside MOSFET turns on each cycle and remains on until the current comparator turns it off. At this point the lowside MOSFET turns on and remains on until either the end of the switching cycle or until the inductor current approaches zero. The error amplifier adjusts the current comparator's threshold according to the load current to ensure that the output voltage remains in regulation. Light Load Power Saving Mode Operation The AME5248A is capable of Power Saving Mode Operation in which the internal power MOSFETs operate intermittently based on load demand. In Power Saving Mode operation, the peak current of the inductor is set to a certain value which increases as the input voltage increases, such as 260mA for 3.6V input voltage and 340mA for 5.5V input voltage, approximately. Each switching event can last from a single cycle at very light loads to few cycles within the active intervals at moderate loads. Between these switching intervals, the unneeded circuitry are turned off, reducing the quiescent current to 20A. In this turned off state, the load current is being supplied solely from the output capacitor. As the output voltage droops, the internal comparator trips and turns on the circuits. This process repeats at a rate depends on the load demand. Dropout Operation As the input supply voltage decreases to a value approaching the output voltage, the duty cycle increases toward the maximum on-time. Further reduction of the supply voltage forces the main switch to remain on for more than one cycle until it reaches 100% duty cycle. The output voltage will then be determined by the input voltage minus the voltage drop across the P-channel MOSFET and the inductor. The AME5248A has an UVP comparator to turn the power device off in case the input voltage or battery voltage is too low. Current Limit Protection The AME5248A has current limiting protection to prevent excessive stress on itself and external components. The internal current limit comparator will disable the power device at a switch peak current limit. Under extreme overloads, such as short-circuit conditions, the AME5248A reduces it's oscillator frequency to around 210KHz to allow further inductor current reduction and to minimize power dissipation.
1.5MHz, 600mA Synchronous Buck Converter
Under Voltage Protection
Soft Start The AME5248A integrates a soft start function that prevents input inrush current and output overshoot during start-up. During start-up the switch current limit is increased in steps. The start-up time thereby depends on the output capacitor and load current demanded at startup. Typical start-up times with a 10F output capacitor, 3.6V input voltage and 1.5V output voltage, for 600mA load is 700s, and 150s for 1mA load. Thermal Shutdown The device protects itself from overheating with an internal thermal shutdown circuit. If the junction temperature exceeds the thermal shutdown trip point, the device turns off. The part is restarted when the junction temperature drops 30oC below the thermal shutdown trip point.
Rev.A.01
9
AME
AME5248A
n Application Information
The typical AME5248A application circuit is shown in Figure1. The external component selection is driven by the load requirement. Inductor Selection Although the inductor does not influence the operating frequency, the inductor value has a direct effect on ripple current. The inductor ripple current IL decreases with higher inductance and increases with higher VIN or VOUT: Toroid or shielded pot cores in ferrite or permalloy materials are small and don't radiate energy but generally cost more than powdered iron core inductors with similar characteristics. The choice of which style inductor to use mainly depends on the price vs. size requirements and any radiated field/EMI requirements. Input Capacitor Selection In continuous mode, the source current of the main power MOSFET is a square wave of duty cycle V OUT/VIN. To prevent large voltage transients, a low ESR input capacitor sized for the maximum RMS current must be used. The input filter capacitor supplies current to the main power MOSFET of AME5248A in the first half of each cycle and reduces voltage ripple imposed on the input power source. A ceramic capacitor's low ESR provides the best noise filtering of input voltage spikes due to this rapidly changing current. Select a capacitor with sufficient ripple current rating. The input capacitor's maximum RMS capacitor current is given by:
1.5MHz, 600mA Synchronous Buck Converter
I L =
VIN - VOUT VOUT x L x f SW VIN
The inductor must have a saturation (incremental) current rating equal to the peak switch-current limit. For high efficiency, minimize the inductor's DC resistance. The inductor value also has an effect on Power Saving Mode operation. Lower inductor values (higher ripple current) will cause the transition from PWM to Power Saving Mode to occur at lower load currents, which can cause a dip in efficiency in the upper range of low current operation. Inductor Core Selection Once the value for L is known, the type of inductor must be selected. High efficiency converters generally cannot afford the core loss found in low cost powdered iron cores, forcing the use of more expensive ferrite or mollypermalloy cores. Actual core loss is independent of core size for a fixed inductor value but it is very dependent on the inductance selected. As the inductance increases, core losses decrease. Unfortunately, increased inductance requires more turns of wire and therefore copper losses will increase. Ferrite designs have very low core losses and are preferred at high switching frequencies, so design goals can concentrate on copper loss and preventing saturation. Ferrite core material saturates "hard", which means that inductance collapses abruptly when the peak design current is exceeded. This result in an abrupt increase in inductor ripple current and consequent output voltage ripple. Do not allow the core to saturate! Different core materials and shapes will change the size/current and price/current relationship of an inductor.
I RMS I MAX
(VIN - VOUT )VOUT VIN
Where the maximum average output current IMAX equals the peak current ILIM minus half peak-to-peak ripple current, IMAX=ILIM - IL/2. This formula has a maximum at VIN=2V OUT, where IRMS =IOUT/2. This simple worst-case condition is commonly used for design because even significant deviations do not offer much relief. Note that ripple current ratings from capacitor manufacturers are often based on only 2000 hours of life which makes it advisable to further derate the capacitor, or choose a capacitor rated at a higher temperature than required. Several capacitors may also be paralleled to meet size or height requirements in the design.
10
Rev.A.01
AME
AME5248A
Output Capacitor Selection The selection of COUT is driven by the required effective series resistance (ESR). Typically, once the ESR requirement for COUT has been met, the RMS current rating generally far exceeds the IRIPPLE(P-P) requirement. The output ripple VOUT is determined by
1.5MHz, 600mA Synchronous Buck Converter
Thermal Considerations In most applications the AME5248A does not dissipate much heat due to its high efficiency. But, in applications where the AME5248A is running at high ambient temperature with low supply voltage and high duty cycles, such as in dropout, the heat dissipated may exceed the maximum junction temperature of the part. If the junction temperature reaches approximately 160J , both power switches will be turned off and the SW node will become high impedance. To avoid the AME5248A from exceeding the maximum junction temperature, the user will need to do some thermal analysis. The goal of the thermal analysis is to determine whether the power dissipated exceeds the maximum junction temperature of the part. The temperature rise is given by:
VOUT I L ( ESR +
1 8COUT f SW
)
Where fSW=operating frequency, COUT=output capacitance and IL=ripple current in the inductor. For a fixed output voltage, the output ripple is highest at maximum input voltage since IL increases with input voltage. At the light load current, the device operates in Power Saving Mode, and the output voltage ripple is independent of the value of the output capacitor. The output ripple is set by the internal comparator thresholds and is also affected by the feedback capacitor C1 in figure2. Large capacitor values can decrease the output ripple, usually a 22pF capacitor is sufficient for most applications. When the input and output ceramic capacitors are chosen, choose the X5R or X7R dielectric formulations. These dielectrics have the best temperature and voltage characters have the best temperature and voltage characteristics of all the ceramics for a given value and size.
TR = ( PD) x JA
Where PD is the power dissipated by the regulator and JA is the thermal resistance from the junction of the die to the ambient temperature.
Output Voltage Setting In the adjustable version, the output voltage is set by a resistor divider according to following formula:
VOUT = 0.5V x (1 +
R2 ) R1
The external resistor divider is connected to the output.
Rev.A.01
11
AME
AME5248A
n Typical Application
VIN 2.5V to 5.5V IN CIN 4.7F SW C1 22pF R1 330K COUT 10F R2 240K CIN 4.7F L 4.7H V OUT 1.2V/600mA VIN 3.6V to 5.5V IN SW C1 22pF R1 680K C OUT 10F R2 120K L 4.7H V OUT 3.3V/600mA
1.5MHz, 600mA Synchronous Buck Converter
AME5248A
EN GND FB
AME5248A
EN GND FB
Figure 4. AME5248A with 1.2V Output
Figure 7. AME5248A with 3.3V Output
VIN 2.5V to 5.5V IN CIN 4.7F SW
L 4.7H
V OUT 1.5V/600mA R1 360K C OUT 10F R2 180K
AME5248A
EN GND FB
C1 22pF
Figure 5. AME5248A with 1.5V Output
VIN 2.7V to 5.5V IN CIN 4.7F SW
L 4.7H
V OUT 2.5V/600mA R1 510K C OUT 10F R2 130K
AME5248A
EN GND FB
C1 22pF
Figure 6. AME5248A with 2.5V Output
12
Rev.A.01
AME
AME5248A
Efficiency vs Output Current
100 90 80
1.5MHz, 600mA Synchronous Buck Converter
Efficiency vs Output Current
100 90
VIN=3.6V VIN=4.2V
VIN=2.7V
80
Efficiency(%)
Efficiency(%)
70 60 50 40 30 20 10 0.1
70 60 50 40 30
VIN=3.6V VIN=4.2V
V IN=2.7V
VOUT=2.5V
1 10 100 1000
20 10 0.1
V OUT=1.5V
1 10 100 1000
Output Current(mA)
Output Current(mA)
Reference Voltage vs Temperature
0.520
1.70
Oscillator Frequency vs Temperature
VIN=3.6V
Oscillator Frequency(MHz)
0.515
VIN =3.6V
1.65 1.60 1.55 1.50 1.45 1.40 1.35 1.30 -40
Reference Voltage (V)
0.510 0.505 0.500 0.495 0.490 0.485 0.480 -40
-15
+10
+35
+60
+85
+110
-15
+10
+35
+60
+85
+110
Temperature(o C)
Temperature( oC)
Oscillator Frequency vs Supply Voltage
1.70
50 45
Quiescent Current vs Input Voltage
VIN=3.6V VOUT =1.8V IOUT =0A
Oscillator Frequency(MHz)
1.65
Quiescent Current (A)
40 35 30 25 20 15 10 5 0 2.5
1.60 1.55 1.50 1.45 1.40 1.35 1.30 2.5
3.5
V IN(V)
4.5
5.5
3.5
4.5
5.5
VIN(V)
Rev.A.01
13
AME
AME5248A
Quiescent Current vs Temperature
50 45
1.5MHz, 600mA Synchronous Buck Converter
Light Load Mode
Quiescent Current (A)
40 35 30 25 20 15 10 5 0 -40
V IN=3.6V V OUT=1.8V IOUT =0A
VS W 5V /Div
VOUT 100mV/Div AC COUPLED IL 200mA/Div
-15 +10 +35 +60 +85 +110
Temperature(oC)
VI N=3.6V VOUT=1.8V IOUT=50mA
5S/Div
Load Step
Load Step
VOUT 100mV/Div AC COUPLED IL 500mA/Div
V OUT 100mV/Div AC COUPLED
IL 500mA/Div
IOUT 500mA/Div V IN=3.6V 20S/Div V OUT=1.8V I OUT =0mA to 600mA
I OUT 500mA/Div VIN =3.6V 20S/Div VOUT =1.8V IOUT=50mA to 600mA
Load Step
Load Step
V OUT 100mV/Div AC COUPLED
VOUT 100mV/Div AC COUPLED
IL 500mA/Div
IL 500mA/Div
I OUT 500mA/Div VI N=3.6V 20S/Div VOUT =1.8V IOUT=100mA to 600mA
IOUT 500mA/Div VI N=3.6V 20S/Div VOUT= 1.8V IOUT=200mA to 600mA
14
Rev.A.01
AME
AME5248A
Stead State Test
0 .7
1.5MHz, 600mA Synchronous Buck Converter
RDS(ON) vs Temperature
VI N=3.6V
0 .6
V IN 200mV/Div AC COUPLED VOUT 20mV/Div IL 100mA/Div VS W 2V /Div AC COUPLED V IN=3.6V V OUT=1.8V IOUT=300mA 1S/Div
High-Side Switch
0 .5
R DS (ON) ()
0 .4
0 .3
Low-Side Switch
0 .2
0 .1 -40
-15
+10
+35
+60
+85
+110
Temperature(o C)
RDS(ON) vs Input Voltage
0.7
Output Voltage vs Output Current
1.87 1.86
0.6
1.85
Output Voltage(V)
0.5
High-Side Switch
1.84 1.83 1.82 1.81 1.80 1.79 1.78
RDS(ON) ()
0.4
0.3
Low-Side Switch
0.2
0.1 2.5
1.77
3.5 4.5 5.5
0
100
200
300
400
500
600
Input Voltage(V)
Output Current(mA)
Start Up From Shutdown
1.9
Current Limit vs VIN
1.8 1.7
Run 2V/Div
Current Limit(A)
1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 2.5 2.8 3.1 3.4 3.7 4.0 4.3
V OUT 1V/Div
IL 500mA/Div
VOUT =1.2V
4.6 4.9 5.2 5.5
Rev.A.01
VIN=3.6V VOUT =1.8V IOUT =550mA
100S/Div
VIN(V)
15
AME
AME5248A
Current Limit vs Temperature
2.10 2.00 1.90 1.80
1.5MHz, 600mA Synchronous Buck Converter
Current Limit(A)
1.70 1.60 1.50 1.40 1.30 1.20 1.10 1.00 0.90 0.80 0.70 -40 -25 -10 +5 +20
VIN=3.3V
VIN =3.6V VIN=5.0V
VOUT=1.2V
+35 +50 +65 +80 +95 +110 +125
Temperature(o C)
16
Rev.A.01
AME
AME5248A
n Date Code Rule
Month Code 1: January 7: July 2: February 8: August 3: March 9: September 4: April A: October 5: May B: November 6: June C: December Marking A M A M A M A M A M A M A M A M A M A M Year xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9
1.5MHz, 600mA Synchronous Buck Converter
A A A A A A A A A A
A A A A A A A A A A
X X X X X X X X X X
X X X X X X X X X X
n Tape and Reel Dimension
SOT-25 P
W AME PIN 1 AME
Carrier Tape, Number of Components Per Reel and Reel Size
Package SOT-25
Carrier Width (W) 8.00.1 mm
Pitch (P) 4.00.1 mm
Part Per Full Reel 3000pcs
Reel Size 1801 mm
Rev.A.01
17
AME
AME5248A
n Tape and Reel Dimension
TSOT-25
P
1.5MHz, 600mA Synchronous Buck Converter
W AME PIN 1 AME
Carrier Tape, Number of Components Per Reel and Reel Size
Package TSOT-25
Carrier Width (W) 8.00.1 mm
Pitch (P) 4.00.1 mm
Part Per Full Reel 3000pcs
Reel Size 1801 mm
18
Rev.A.01
AME
AME5248A
n Package Dimension
SOT-25
Top View D c1 Side View
1.5MHz, 600mA Synchronous Buck Converter
SYMBOLS A A1
MILLIMETERS MIN
0.90 0.00 0.30 2.70 1.40
INCHES MIN
0.0354 0.0000 0.0118 0.1063 0.0551
MAX
1.30 0.15 0.55 3.10 1.80
MAX
0.0512 0.0059 0.0217 0.1220 0.0709
H
E
b D E
L
PIN 1
S1 e Front View A
e H L 1 S1
0
1.90 BSC 2.60 3.00
0.07480 BSC 0.10236 0.11811 0.0146BSC
o
0.37BSC
o
10
0
o
10
o
0.95BSC
0.0374BSC
b
TSOT-25
Top View Side View D c1
A1
SYMBOLS A+A1 b
MILLIMETERS MIN
0.90 0.30 2.70 1.40
INCHES MIN
0.0354 0.0118 0.1063 0.0551
MAX
1.25 0.50 3.10 1.80
MAX
0.0492 0.0197 0.1220 0.0709
H
E
D E e
L
1.90 BSC 2.40 3.00
0.07480 BSC 0.0945 0.1181
PIN 1
S1 e Front View A
H L 1 S1
0.35BSC 0
o
0.0138BSC
o
10
0
o
10
o
0.95BSC
0.0374BSC
b
Rev.A.01
A1
19
www.ame.com.tw
E-Mail: sales@ame.com.tw
Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. (c) AME, Inc. , June 2009 Document: 3005-DS5248A-A.01
Corporate Headquarter
AME, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989

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