PT6905A Datasheet, PDF (1/7 Pages) Texas Instruments – 12 Watt 5V/3.3V Input Plus to Minus Voltage Converter

PT6900 Series
12 Watt 5V/3.3V Input
Plus to Minus Voltage Converter
• +5V/+3.3V Input Voltage
• Negative Output
• Remote Sense
• Adjustable Output Voltage
• 23-pin SIP Package
The PT6900 is a series of high-
performance ISRs, that provide plus to
minus voltage conversion, up to 12 watt
in a 23-pin SIP package.
SLTS041A
(Revised 6/30/2000)
The PT6900 is designed to supply
regulated negative voltages for power-
ing the latest ECL (-5.2V) and GaAs
(-2.0V) ICs used in high-speed fiber
optic communications. A 330µF elec-
trolytic capacitor is required on the
input and output for proper operation.
Please note that this product is not
short-circuit protected.
Standard Application
+V_IN
GND
3-7
+
Cin
Remote Sense
2
22
V_ADJ
PT6900 ^16-21
-V_OUT
9-15
8
Cout
+
Remote Sense
GND
Cin = Required 330µF electrolytic
Cout = Required 330µF electrolytic
Pin-Out Information
Pin Function
Pin
1 Do not connect
13
2 Vout Adjust
14
3 Vin
15
4 V_in
16
5 Vin
17
6 Vin
18
7 Vin
19
8 Remote Sense GND 20
9 GND
21
10 GND
22
11 GND
23
12 GND
Function
GND
GND
GND
V_out
Vout
Vout
Vout
Vout
Vout
Remote Sense V_out
Do not connect
Ordering Information
+5V Input +3.3V Input
V_out
PT6901❏ PT6904❑ = –2.0V
PT6902❏ PT6905❑ = –5.2V
PT6903❑
= –1.5V
PT Series Suffix (PT1234X)
Case/Pin
Configuration
Vertical Through-Hole N
Horizontal Through-Hole A
Horizontal Surface Mount C
(For dimensions and PC board layout,
see Package Styles 1100 and 1110.)
Specifications
Characteristics
(Ta= 25°C unless noted)
Output Current
Symbols
Io
Input Voltage Range
Output Voltage Tolerance
Output Adjust Range
Line Regulation
Load Regulation
Vo Ripple/Noise
Transient Response
with Cout = 330µF
Efficiency
∆Vo
Vo
Regline
Reg_load
Vn
t_tr
Vos
η
Switching Frequency
ƒo
Absolute Maximum
Ta
Operating Temperature Range
Storage Temperature
Ts
Weight
—
Conditions
Ta = +25°C, natural convection
Vin =5.0V
Vo = –2.0V / –1.5V
V_o = –5.2V
Vin =3.3V
Vo = –2.0V
Vo = –5.2V
0.1A ≤ Io ≤ Imax PT6901 PT6902/PT6903
PT6904/PT6905
Nominal Vin, Io = Imax
0°C ≤ Ta ≤ +60°C
Pin 14 to Vo or GND
Vo = –2.0V
Vo = –5.2V
Vo = –1.5V
Over Vin range, Io =Imax
V_in =V_nom, 0.1 ≤ I_o ≤ I_max
Vin = Vnom, Io =Imax
Vo = –1.5V / –2.0V
Vo = –5.2V
I_o step between 0.5xI_max and I_max
Vo over/undershoot
V_in =+5V, I_o =0.5xI_max
V_o = –1.5V
V_o = –2.0V
V_o = –5.2V
Vin = +3.3V, Io =0.5xImax
Vo = –2.0V
Vo = –5.2V
Over Vin and Io ranges
Over Vin Range
PT6900 SERIES
Min
Typ
Max
0.1 (1)
0.1 (1)
0.1 ⁽¹⁾
0.1 (1)
4.5
3.1
Vo – 0.05
–1.4
–2.7
–1.2
—
—
—
—
—
—
—
—
—
—
—
500
0
—
6.0 (2)
—
3.5 (2)
—
5.0 ⁽²⁾
—
2.5 (2)
—
5.5
—
3.6
—
Vo + 0.05
—
–4.4
—
–6.5
—
–3.4
±0.5
±1.0
±0.5
±1.0
40
—
50
—
200
—
200
—
65
—
70
—
77
—
67
—
75
—
—
600
—
+85 (2)
Vertical/Horizontal
-40
—
+125
—
28/33
—
Notes: (1) ISR-will operate down to no load with reduced specifications.
(2) See SOA curves or contact the factory for the approrpiate derating.
Units
A
A
V
V
V
%
%
mV
µSec
mV
%
%
kHz
°C
°C
grams
For technical support and more information, see inside back cover or visit www.ti.com/powertrends