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PT6122

更新时间： 2024-11-15 02:58:43
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Adjustable Output Voltage

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For assistance or to order, call (800) 531-5782  
P T 6 1 2 0 S e r i e s  
SLTS081  
(Revised 6/4/98)  
1 AMP ADJUSTABLE LOW VOLTAGE INPUT  
INTEGRATED SWITCHING REGULATOR  
• Low Voltage Input (7V)  
• 89% Efficiency  
• Adjustable Output Voltage  
• Internal Short Circuit Protection  
• Over-Temperature Protection  
• On/Off Control (Ground Off)  
Regulators (ISRs). These ISRs are de-  
signed with premium low threshold FETs  
for those applications requiring very low  
input/output voltage differentials such as  
battery powered equipment. This high-  
performance ISR family offers a unique  
combination of features combining 89%  
typical efficiency with open-collector on/  
off control and adjustable output voltage.  
Quiescent current in the shutdown mode  
is less than 100µA.  
The PT6120 series is a low volt-  
age input (typically 7V) version of  
Power Trends’ high-performance  
1A, 12 pin SIP Integrated Switching  
Pin-Out Information  
Ordering Information  
PT 6121! = +5 Volts  
PT 6122! = +3.3 Volts  
PT Series Suffix  
Case/Pin  
Configuration  
(PT1234X)  
Pin Function  
Inhibit  
1
2
(30V max)  
Standard Application  
Vin  
Vertical Through-Hole  
Horizontal Through-Hole  
Horizontal Surface Mount  
N
A
C
VOADJ  
12  
3
Vin  
4
Vin  
VIN  
VOUT  
2,3,4  
9,10,11  
C2  
PT6120  
1
5
6
7
8
GND  
GND  
GND  
GND  
Vout  
Pkg Style 200  
5,6,7,8  
+
C1  
PT6120  
INH  
Q1  
GND  
GND  
9
C1 = Optional 1µF ceramic  
Q1 =NFET  
C2 = Required 100µF electrolytic  
10  
11  
12  
Vout  
Vout  
Vout Adj  
Specifications  
PT6120 SERIES  
Characteristics  
(T =25°C unless noted)  
Symbols  
Io  
Conditions  
Min  
0.1*  
—
Typ  
—
Max  
1.0  
—
Units  
A
a
Output Current  
Over Vin range  
Vin = Vin min  
0.1 ≤ Io ≤ 1.0 A  
Short Circuit Current  
Input Voltage Range  
Isc  
3.5  
Apk  
Vin  
V
o = 3.3V  
7
7
—
—
26  
V
V
(Note: inhibit function cannot be used with Vin above 30V)  
Vo = 5V  
30/38**  
Output Voltage Tolerance  
∆Vo  
Over Vin Range, Io = 1.0 A  
Ta = 0°C to +60°C  
—
1.0  
2.0  
%Vo  
Line Regulation  
Load Regulation  
Regline  
Regload  
Vn  
Over Vin range  
—
—
—
0.25  
0.25  
2
0.5  
0.5  
—
%Vo  
%Vo  
%Vo  
0.1 ≤ Io ≤ 1.0 A  
Vo Ripple/Noise  
Vin=Vin min, Io=1.0 A  
Transient Response  
with Co = 100µF  
ttr  
50% load change  
—
—
100  
200  
—
µSec  
%Vo  
Vos  
Vo over/undershoot  
5.0  
Efficiency  
η
Vin=9V, Io=0.5A, Vo=3.3V  
Vin=9V, Io=0.5A, Vo=5V  
—
—
84  
89  
—
—
%
%
Switching Frequency  
Shutdown Current  
Quiescent Current  
Output Voltage  
Adjustment Range  
ƒo  
Isc  
Inl  
Vo  
Over Vin and Io ranges  
Vin = 15V  
400  
—
500  
100  
10  
600  
—
kHz  
µA  
Io = 0A, Vin =10V  
Below Vo  
Above Vo  
—
—
mA  
See Application Notes.  
Absolute Maximum  
Ta  
Ta  
θja  
Ts  
-40  
—
+85  
°C  
°C  
Operating Temperature Range  
Recommended Operating  
Temperature Range  
Free Air Convection, Vo= 3.3V  
-40  
-40  
—
—
+85***  
+85***  
(40-60LFM)  
Vo= 5V  
Thermal Resistance  
Free Air Convection Vo = 3.3V  
(40-60LFM) o = 5V  
—
—
50  
40  
—
—
°C/W  
°C  
V
Storage Temperature  
Mechanical Shock  
-40  
—
+125  
—
Per Mil-STD-883D, Method 2002.3  
1 msec, Half Sine, mounted to a fixture  
—
500  
G’s  
Mechanical Vibration  
Weight  
Per Mil-STD-883D, Method 2007.2  
20-2000 Hz, Soldered in a PC board  
—
—
—
—
10  
G’s  
5.0  
grams  
* ISR will operate down to no load with reduced specifications.  
** Input voltage cannot exceed 30V when the inhibit function is used.  
***See Thermal Derating chart.  
Note: The PT6120 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.  
4
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.ti.com/powertrends  
123456

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