PT7706鈥?.3V
18 Amp 鈥淏ig-Hammer鈥?Programmable
Integrated Switching Regulator
SLTS046A
(Revised 6/30/2000)
The PT7706 is a high-performance
18-Amp Integrated Switching Regulator
(ISR), housed in a 27-pin SIP package.
The 18A capability allows easy integra-
tion of the latest high-speed, low-voltage
碌Ps, DSPs, ASICs, and bus drivers into
existing 3.3V systems.
The PT7706 series has been designed
to work in parallel with one or more of
the PT7749 - 18A current boosters for
increased I
out
in increments of 18A.
The output voltage of the PT7706 can
be easily programmed with a 4 bit input
compatible with Intel鈥檚 Pentium
芒
II Pro-
cessor. A differential remote sense is also
provided which automatically compen-
sates for any voltage drop from the ISR to
the load.
An input capacitance of 1200碌F, and
output capacitance of 330碌F are required
for proper operation.
Standard Application
PROGRAMMING PINS
VID0
VID1
VID2
VID3
4 3 2 1
26
Pin-Out Information
Pin Function
REMOTE SENSE (+)
Pin Function
10
11
12
13
14
15
16
17
18
V
in
V
in
Remote Sense Gnd
Pin Function
19
20
21
22
23
24
25
26
27
GND
V
out
V
out
V
out
V
out
V
out
V
out
Remote Sense V
out
1
2
V
OUT
VID0
VID1
VID2
VID3
STBY* - Stand-by
Do not connect
V
IN
L1
7 - 11
1碌H
+
27
PT7706
13 - 19
5
12
20 - 25
3
4
5
6
7
8
9
C
IN
SYNC OUT
GND
STBY*
C
OUT
+
LOAD
GND
GND
GND
GND
GND
GND
GND
REMOTE SENSE (-)
V
in
V
in
V
in
Cin = Required 1200碌F electrolytic
Cout= Required 330碌F electrolytic
L1 = Optional 1碌H input choke
Sync Out
For STBY* pin;
Specifications
Characteristics
(T
a
= 25擄C unless noted)
Output Current
Input Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
V
o
Ripple/Noise
Transient Response
with C
out
= 330碌F
Efficiency
Switching Frequency
Absolute Maximum
Operating Temperature Range
Storage Temperature
Mechanical Shock
Mechanical Vibration
Weight
鈥?/div>
Symbols
I
o
V
in
鈭哣
o
Reg
line
Reg
load
V
n
t
tr
V
os
畏
茠
o
T
a
T
s
Conditions
T
a
= +60擄C, 200 LFM, pkg N
T
a
= +25擄C, natural convection
0.1A
鈮?/div>
I
o
鈮?/div>
15A
V
in
= +3.3V, I
o
= 18A
0擄C
鈮?/div>
T
a
鈮?/div>
+65擄C
3.1V
鈮?/div>
V
in
鈮?/div>
3.6V, I
o
= 18A
V
in
= +3.3V, 0.1
鈮?/div>
I
o
鈮?/div>
18A
V
in
= +3.3V, I
o
= 18A
I
o
step between 9A and 18A
V
o
over/undershoot
V
in
= +3.3V, I
o
= 10A
3.1V
鈮?/div>
V
in
鈮?/div>
3.6V
0.1A
鈮?/div>
I
o
鈮?/div>
18A
鈥?/div>
鈥?/div>
open = output enabled
ground = output disabled.
PT7706 SERIES
Min
0.1
0.1
3.1
(1)
(1)
(3)
Typ
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鹵10
鹵10
50
100
200
79
77
700
鈥?/div>
鈥?/div>
500
10
31/41
Max
18
15
3.6
V
o
+0.03
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
750
+85
(4)
(2)
(2)
Units
A
V
V
mV
mV
mV
碌Sec
mV
%
%
kHz
擄C
擄C
G鈥檚
G鈥檚
grams
V
o
-0.03
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
V
o
= 1.8V
V
o
= 1.5V
鈥?/div>
鈥?/div>
650
0
-40
鈥?/div>
鈥?/div>
鈥?/div>
+125
鈥?/div>
鈥?/div>
鈥?/div>
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
Vertical/Horizontal
Notes:
(1)
(2)
(3)
(4)
The ISR will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected.
The PT7706 series can be easily paralleled with one or more of the PT7749 Current Boosters to provide increased output current in increments of 18A.
The minimum input voltage is 3.1V or Vout +1.2V whichever is greater.
,
See Safe Operating Area curves.
Output Capacitors:
The PT7706 series requires a minimum ouput capacitance of 330碌F for proper operation. Do not use Oscon type capacitors. The maximum
allowable output capacitance is 15,000碌F.
Input Filter:
An input filter is optional for most applications. The input inductor must be sized to handle 18ADC with a typical value of 1碌H. The input capacitance must
be rated for a minimum of 1.3Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required.
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
next
標(biāo)準(zhǔn)包裝 8
類別 電源 - 板載
家庭 DC DC Converters
系列 PT7700
類型 非隔離（POL）
輸出數(shù) 1
電壓 - 輸入（最小） 3.1V
電壓 - 輸入（最大） 3.6V
Voltage - Output 1 1.3 ~ 2.05 V
Voltage - Output 2 -
Voltage - Output 3 -
電流 - 輸出（最大） 18A
電源（瓦） - 制造商系列 36W
電壓 - 隔離 -
特點(diǎn) -
安裝類型 通孔，直角
封裝/外殼 27-SIP 模塊
尺寸/尺寸 -
包裝 托盤
工作溫度 0°C ~ 85°C
效率 79%
電源（瓦特）- 最大 36.9W
型號(hào)
版本
描述
廠商
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