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参数资料
| 型号： | PT6921N |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, SMA23 |
| 封装： | SIP-23 |
| 文件页数： | 1/5页 |
| 文件大小： | 202K |
| 代理商： | PT6921N |
For assistance or to order, call (800) 531-5782
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
PT6920
Series
Standard Application
5V TO 3.3V/2.5V 25 WATT DUAL OUTPUT
INTEGRATED SWITCHING REGULATOR
Ordering Information
PT6921t
t
t = +3.3 Volts
+2.5/+1.8 Volts
PT6922t
t
t = +3.3 Volts
+1.5 Volts
C1 = Req’d 560F electrolytic
C2 = Req’d 330F electrolytic
C3 = Optional 100F electrolytic
Features
Dual Outputs:
+3.3V/6A
+2.5V/2.2A or +1.8V/1.5A
Adjustable Output Voltage
Remote Sense (both outputs)
Standby Function
Over-Temperature Protection
Soft-Start
Internal Sequencing
23-pin SIPPackage
Pin Function
1V1 Remote Sense
2
Do Not Connect
3
STBY
4Vin
5Vin
6Vin
7
GND
8
GND
9
GND
10
GND
11
GND
12
V1out
Pin
Function
13
V1out
14
V1out
15
V1out
16
V1 Adjust
17
Do Not Connect
18
V2out
19
V2out
20
V2out
21
V2out
22
V2 Remote Sense
23
V2 Adjust*
Pin-Out Information
The PT6920 is a new series of 25W
dual output ISRs designed to power the
latest generation DSP chips. Both out-
put voltages are independently adjustable
with external resistors. In addition, the
second output voltage of the PT6921 can
be selected for 2.5V or 1.8V to accom-
modate the next generation of DSP
chips. The internal power sequencing of
both outputs meet the latest require-
ments of TI’s ‘C6000 series DSPs.
(For dimensions and PC board layout,
see Package Styles 1100 and 1110.)
PT6920
C2
+
GND
V1
OUT
V
IN
GND
4,5,6
7-11
12-15
18-21
16
C1
22
C3
+
23
1
V2
OUT
R1
R2
R3
R4
V2 Sense
V1 Sense
3
STBY
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole
N
Horizontal Through-Hole
A
Horizontal Surface Mount
C
Preliminary Specifications
Characteristics
PT6920 SERIES
(T
a= 25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Units
Output Current
Io
Ta = +60°C, 200 LFM, pkg N
V1 = 3.3V
0.1
—
5.5
A
V2 = 2.5V
0
—
2.2
A
V2 = 1.8V
0
—
1.75
A
V2 = 1.2V
0
—
1.2
A
Ta = +25°C, natural convection V1 = 3.3V
0.1
—
6.0
A
V2 = 2.5V
0
—
2.2
A
V2 = 1.8V
0
—
1.75
A
V2 = 1.2V
0
—
1.2
A
Input Voltage Range
Vin
0.1A
≤ Io ≤ Imax
4.5
—
5.5
V
Output Voltage Tolerance
Vo
Vin = +5V, Io = Imax, both outputs
Vo-0.1
—
Vo+0.1
V
0°C
≤ Ta ≤ +65°C
Line Regulation
Regline
4.5V
≤ Vin ≤ 5.5V, Io = Imax
V1 = 3.3V
—
±7
±17
mV
V2 = 2.5V
—
±7
±13
mV
Load Regulation
Regload
Vin = +5V, 0.1 ≤ Io ≤ Imax
V1 = 3.3V
—
±17
±33
mV
V2 = 2.5V
—
±4
±10
mV
Vo Ripple/Noise
Vn
Vin = +5V, Io = Imax
V1 = 3.3V
—
50
—
mV
V2 = 2.5V
—
25
—
mV
Transient Response
ttr
Io step between 0.5xImax and Imax
—
25
—
Sec
with C2 = 330F
Vos
Vo over/undershoot
V1 = 3.3V
—
60
—
mV
V2 = 2.5V
—
60
—
mV
Efficiency
η
Vin = +5V, Io = 4A total
—
75
—
%
Switching Frequency
o
4.5V
≤ Vin ≤ 5.5V
475
600
725
kHz
0.1A
≤ Io ≤ Imax
Absolute Maximum
Ta
—
0
—
+85
°C
Operating Temperature Range
Recommended Operating
Ta
Forced airflow = 200 LFM
0
—
+65
°C
Temperature Range
Over Vin and Io Ranges
Storage Temperature
Ts
—
-40
—
+125
°C
Weight
—
Vertical/Horizontal
—
29
—
grams
Note: The PT6920 series requires a 560F electrolytic capacitor on the input and a 330F electrolytic capacitor on the output for proper operation in all applications.
* This product is the subject of one or more patents. Other patents pending.
Note: for PT6921 only:
with pin 23 open, V2out=2.5V
with pin 23 shorted to pin 22, V2out=1.8V
Patent Pending*
Revised 3/9/99
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| PT6922C | 功能描述:开关变换器、稳压器与控制器 3.3/1.5Vout 25W 5Vin Adj Dual Output ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| PT6922N | 功能描述:开关变换器、稳压器与控制器 3.3/1.5Vout 25W 5Vin Adj Dual Output ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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