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參數(shù)資料
| 型號： | PT6937A |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 10 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, SMA23 |
| 封裝： | HORIZONTAL MOUNT PACKAGE-23 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 267K |
| 代理商： | PT6937A |
For technical support and more information, see inside back cover or visit www.ti.com
PT6938
11 Amp 5V/3.3V-Input Dual Output
Integrated Switching Regulator
PT6938 Typical Characteristics
Efficiency vs Io1 (See Note A)
Vo1 Output Ripple vs Io1 (See Note A)
Power Dissipation vs Io1 (See Note A)
Safe Operating Area, Vin =5V (See Note B)
0
10
20
30
40
50
60
70
01234
567
Io1 (A) [ Io2 fixed at Io2(typ) ]
Ripple
-
mV
5.0V
VIN
Note A:
Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.
Note B:
SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures
PT6938 Performance Specifications (Unless otherwise stated, Ta =25°C, Vin =5V, C1 =330F, C2 =330F, Io1 =Io1typ, and Io2 =Io2typ)
PT6938 (3.3V/1.2V)
Characteristic
Symbol
Conditions
Min
Typ
Max
Units
Output Current
Io1
Ta =25°C, natural convection
Vo1 (3.3V)
0.1 (i)
7
(ii)
8.6 (iii)
A
Io2
Vo2 (1.2V)
0
1.6 (ii)
1.6 (iii)
Io1
Ta =60°C, 200LFM airflow
Vo1 (3.3V)
0.1 (i)
7
(ii)
8.6 (iii)
A
Io2
Vo2 (1.2V)
0
1.6 (ii)
1.6 (iii)
Input Voltage Range
Vin
OverIoRange
4.5
—
5.5
VDC
Set Point Voltage Tolerance
Vo tol
Vo1
—
±16
±50
mV
Vo2
—
±6
±18
Temperature Variation
Regtemp
–40° >Ta > +85°C
—
±0.5
—
%Vo
Line Regulation
Regline
Over Vin range
Vo1
—
±5
±10
mV
Vo2
—±2±5
Load Regulation
Regload
Over Io range
Vo1
—
±5
±10
mV
Vo2
—
±5
±10
Total Output Voltage Variation
Votot
Includes set-point, line, load,
Vo1
—±29
—
mV
–40° >Ta > +85°C
Vo2
—
±19
—
Efficiency
η
—79
—
%
Vo Ripple (pk-pk)
Vr
20MHz bandwidth
Vo1
—35
—
mVpp
Vo2
—35
—
TransientResponse
ttr
1A/s load step, 50% to 100% Iotyp
—
60
—
s
Vtr
Vo over/undershoot
Vo1
—
±60
—
mV
Vo2
—
±60
—
Notes:
(i)
Io1(min) current of 0.1A can be divided between both outputs, Vo1 or Vo2. The module will operate at no load with reduced specifications.
(ii) The typical current is that which can be drawn simultaneously from both outputs under the stated operating conditions.
(iii) The sum of Io1 and Io2 must be less than Io1max, and Io2 must be less than Io2max.
60
65
70
75
80
85
01234
567
Io1 (A) [ Io2 fixed at Io2(typ) ]
Efficiency
-
%
5.0V
VIN
0
2
4
6
8
10
01234
567
Io1 (A) [ Io2 fixed at Io2(typ) ]
Pd
-
Watts
5.0V
20
30
40
50
60
70
80
90
01234
567
Io1 (A) [ Io2 fixed at Io2(typ) ]
Ambient
Temperature
(
°C)
200LFM
120LFM
60LFM
Nat conv
Airflow
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