AMS2596 Datasheet, PDF (3/15 Pages) Advanced Monolithic Systems Ltd – 3.3V, 5V, 12Vand adjustable versions

AMS2596
Absolute Maximum Ratings ⁽¹⁾
V_IN Supply Voltage………………...….......…..….-0.3V to 30V
FB feedback pin……………………...........……-0.3V to +30V
EN Enable Voltage…………………….…....….-0.3V to +20V
Storage Temperature Range…………...…...-65⁰C to 150⁰C
Lead Temperature (Soldering 60se………….….…… 215⁰C
Junction Temperature………...……………….….…… 150⁰C
ESD Suceptability…………………………………………..2kV
3A 30V Step-Down Converter
Recommended Operating Conditions ⁽²⁾
Input Voltage……………………………………..………..4.5V to 28 V
Tj Operating Temperature…… ……………….…….-25⁰C to 125⁰C
Thermal Information
8L SOIC EP θ_JA ⁽¹¹⁾ ………………………………….….…...60⁰C/W
TO263-5 θ_JA ⁽⁹⁾ ……………………………….….….…....30⁰C/W
TO-252
θ_JA ⁽¹⁰⁾ ………………………………….….…....57⁰C/W
TO-220 θ_JA ⁽⁸⁾ …………………………….….…….…….50⁰C/W
Electrical Characteristics
Parameter
V_in
Feedback Voltage
T_A= 25 °C and V_IN=12V (unless otherwise noted).
Symbol
Conditions
Min.
V_in
4.5
V_FBSW
4.5V ≤ VIN ≤ 30V,
0.2A ≤ ILoad ≤ 3A
1.193
1.180
Typ.
12
1.230
Max.
20
1.267
1.280
Units
V
V
Efficiency
Oscillator Frequency
Saturation Voltage
Maximum Duty Cycle
Minimum Duty Cycle
Current Limit
Shutdown Supply Current
Output Leakage Current
Quiescent Current
Standby Quiescent Current
η
F_OSC
V_SAT
D_MAX
D_MIN
I_LIMSW
I_Vinsd
I_LK
I_Q
I_SD
VIN = 12V, V_OUT = 3V, ILoad = 3A
I_{SW out}=3A
Note 6
Note 7
V_{SW out}=5V
V_EN =0V
Output = 0V (Note 8)
Output = -1V
(Note 6)
ON/OFF pin = 5V (OFF)
85
127
3.6 / 3.4
150
1.16
95
0
4.5
90
2
5
80
%
173
kHz
1.4/1.5
V
99
%
%
6.9 / 7.5
A
nA
50
30
μA
10
mA
200
250
μA
Enable Logic Input
Threshold Voltage
V_EN(L)
V_EN(H)
Low (Regulator ON)
High (Regulator OFF)
1.3
V
0.6
V
2.0
V
Enable Input Current
I_ENH
V_LOGIC = 2.5V (Regular OFF)
I_ENL
V_LOGIC = 0.5V (Regular ON)
5
5
15
µA
0.02
0.02
5
µA
Over-temperature
125
°C
Sh td
Notes:
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, see the Electrical
Characteristics.
2. V_O = Output Voltage specified from 1.25V to 7V in 100mV increments.
3. Typical numbers are at 25ºC and represent the most likely norm.
4. All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100%
production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are
used to calculate Average Outgoing Quality Level (AOQL).
5. Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
6. Feedback pin removed from output and connected to 12V for Fixed and Adjustable version, to force the output transistor switch OFF.
7. With output transistor switch turned off.
8. Junction to ambient thermal resistance (no external heat sink) for the TO-220 package mounted vertically, with the leads soldered to a printed circuit
board with (1 oz.) and a heat sink approximately 1 in².
9. Junction to ambient thermal resistance with the TO-263 package tab soldered to a double side printed circuit board with 2.5 in² of (1 oz.) copper area.
10. Junction to ambient thermal resistance with the TO-252 package tab soldered to a single sided printed circuit board with 2.5 in² of (1 oz.) copper area.
11. Junction to ambient thermal resistance with the SO-8 EDP package soldered to a double sided printed circuit board 5 via under the package paddle
crossing to the other side of PCB on 2.5 in² 1oz Cu.
3/4/2010
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