Copyright © 2005 ADD Microtech Corp. 1 AMC2596_A (LF) May 2005
DESCRIPTION
FEATURES
The AMC2596 ries are highly integrated step down voltage regulator capable of driving a 3A load with extremely regulated output voltages over line & load regulation. The devices are available in fixed output voltages of 3.3V . 5V and an adjustable output versions.
The regulators require a minimum number of external components and are simpler to u by an internal frequency compensation and a fixed – frequency oscillator.
By operating a switching frequency of 150KHz, the AMC2596 ries require smaller sized filter components. This feature makes the application design more cost effective than lower frequency switch regulators. A standard 5-lead TO-220 package with veral different lead bend options, and a 5-lead TO-263 surface mount package is available
The AMC2596 ries feature a guaranteed ±4% tolerance of output voltage over input to output load co
nditions.
150 KHz fixed frequency internal oscillator Guaranteed 3A output load current Input voltage range up to 40V
3.3V , 5V and adjustable output versions Adjustable version output voltage range, 1.2V to 37V
±4% max over line and load conditions Requires only 4 external components Excellent line and load regulation specifications
Available in TO-220 and TO-263 packages TTL shutdown capability
Low power standby mode, I Q typically 80 µA
High efficiency
Thermal shutdown and current limit protection
APPLICATIONS
PACKAGE PIN OUT
Portable DVD players
On-card switching regulators
Simple high-efficiency step-down (buck) regulator
VOLTAGE OPTIONS
AMC2596-3.3
AMC2596-5.0
3.3V Fixed 5.0V Fixed
AMC2596-ADJ Adjustable Output
AMC2596
150 KHz, 3A S TEP D OWN
V OLTAGE R EGULATOR
5-Pin Plastic TO-220
(Top View)
5. Enable 3. GND 2. V OUT 1. V IN
4. FB
5. Enable
5-Pin Plastic TO-220B (Top View)
2. V OUT 1. V IN
4. FB 3. GND 5-Pin Plastic TO-263 Surface Mount
(Top View)
5. Enable 2. V OUT 1. V IN
4. FB 3. GND
5-Pin Plastic TO-220B
(Side View)
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Copyright © 2005 ADD Microtech Corp. 2 AMC2596_A (LF) May 2005
AMC2596
TYPICAL APPLICATION
ABSOLUTE MAXIMUM RATINGS (Note 1)
Maximum Supply Voltage 45V
ON/OFF Pin Input Voltage -0.3≦V ≦+25V Feedback Pin Voltage
-0.3≦V ≦+25V Output Voltage to Ground (Steady State) -1V
Power dissipation
Internally limited Storage Temperature Range
-65°C to +150°C ESD Susceptibility --- Human Body Model (Note 2) 2kV Surface Mount Package--- Vapor Pha (60 c.)
+215°C --- Infrared (10 c.)
+245°C Through Hole Package (Soldering, 10 c.) +260°C Maximum Junction Temperature, Tj
+150°C
Note: Exceeding the ratings could cau damage to the device. All voltages are with respect to Ground.
Currents are positive into, negative out of the specified terminal.
Fixed Output Voltage Version
OUTPUT
7V – 40V Adjustable Output Voltage Version
Where V REF = 1.23V, R1 between 1K and 5K
人物品质的词语OUTPUT 7V – 40V
AMC2596
THERMAL DATA
漫骂P,PB, DD PACKAGE:
Thermal Resistance-Junction to Tab, θJT 3.0°C /W
避孕环哪种最好
Thermal Resistance-Junction to Ambient, θJA45°C /W
numbers are guidelines for the thermal performance of the device/pc-board Junction Temperature Calculation: T J= T A+ (P D×θJA). The θ
JA
system. All of the above assume no ambient airflow.
BLOCK DIAGRAM
V IN
ENABLE
OUT
指导工作V OUT = 3.3V : R2/R1 = 1.7
V OUT = 5.0V : R2/R1 = 3.1
V OUT = Adjustable : R2 = 0, R1 = Open
Copyright © 2005 ADD Microtech Corp. 3 AMC2596_A (LF) May 2005
Copyright © 2005 ADD Microtech Corp. 4 AMC2596_A (LF) May 2005
AMC2596
学校消毒制度RECOMMENDED OPERATING CONDITIONS
Temperature Range -40°C ≦T J ≦+125°C Supply Voltage
4.5V to 40V
ELECTRICAL CHARACTERISTICS
策划怎么写
Unless otherwi specified, the specifications apply V IN = 12V , I LOAD = 0.5A and the operatin
g ambient temperatures T J = 25°C.
Parameter
Symbol Conditions
Min Typ Max Units
Output V oltage V OUT 4.75V ≤ V IN ≤ 40V , 0.2A ≤ I LOAD ≤ 3A 3.168 3.3 3.342 V Efficiency AMC2596-3.3 η V IN = 12V , I LOAD = 3A (Note 3) 73 % Output V oltage V OUT 7V ≤ V IN ≤ 40V , 0.2A ≤ I LOAD ≤ 3A 4.800 5.0 5.200 V Efficiency AMC2596-5.0 η V IN = 12V , I LOAD = 3A (Note 3) 80 % Feedback V oltage V FB 4.5V ≤ V IN ≤ 40V , 0.2A ≤ I LOAD ≤ 3A 1.193 1.230 1.267
V Efficiency
AMC2596-ADJ
η V IN = 12V , I LOAD = 3A (Note 3) 73 % Feedback Bias Current Ib Adjustable Version Only, V FB =1.3V
10 50 nA Oscillator Frequency f OSC (Note 4)
研究报告格式
127 150 173 KHz
Saturation V oltage V SAT I OUT = 3A (Note 5,6)
1.16 1.4 V Max Duty Cycle (ON) 100 Min Duty Cycle (OFF) DC
(Note 8,9)
0 % Current Limit
I LIMIT Peak Current (Note 5,6) 3.6 4.5 6.9 A Output = 0V (Note 5,7) 50 µA Output Leakage Current I LEAK Output = -1V (Note 8)
2 30 mA Quiescent Current I Q (Note 9)
5 10 mA Standby Current
I STBY ENABLE pin=5V (OFF) (Note 8)
80 200 µA V IH Low(Regulator ON) 0.6 V ENABLE Pin Threshold V oltage V IL High(Regulator OFF) 2.0 I H V LOGIC =2.5V(Regulator OFF) 5 15 µA ENABLE Pin Input Current
I L
V LOGIC =0.5V(Regulator OFF)
0.02
5
µA
Note 1：Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which
the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, e the Electrical Characteristics.
Note 2：The human body model is a 100 pF capacitor discharged through a 1.5K resister into each pin.
Note 3：External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching
regulator system performance. When the AMC2596 is ud as shown in the Figure 1 test circuit, system performance will be as shown in system parameters ction of Electrical Characteristics.
Note 4：The switching frequency is reduced when the cond stage current limit is activated. The amount of reduction is determined by the verity of
current over-load.
Note 5：No diode, inductor or capacitor connected to output pin.
Note 6：Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 7：Feedback pin removed from output and connected to 12V for the 3.3V , 5V , and the ADJ. version, and 15Vfor the 12V version, to force the
output transistor switch OFF.
Note 8：V IN ＝40V
Copyright © 2005 ADD Microtech Corp. 5 AMC2596_A (LF) May 2005
AMC2596
CHARACTERIZATION CURVES
Typical application circuit, T J =25°C, unless otherwi specified .
Line Regulation
5
5.0055.015.0155.025.0255.03
5.0355.04-40
-20
怎么快速背古诗20
40
60
80
V IN (V)
V O U T (V )
Line Regulation Quiescent Current v.s Input Voltage
24681012141618
207
10
15
20
25
30
35
40
Input Voltage (V)
Q u i e s c e n t C u r r e n t (u A )
Quiescent Current vs. Input Voltage Dropout Voltage v.s Temperature
0.20.40.60.811.21.41.61.82
2.22.4-40-200204060
80100120
Temp (o
C)
D r o p o u t V o l t a g e (V )
Dropout Voltage vs. Temperature
