PT6900 Datasheet, PDF (1/5 Pages) Texas Instruments – 12 WATT PLUS TO MINUS VOLTAGE CONVERTER

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PT6900
Series
12 WATT PLUS TO MINUS VOLTAGE
CONVERTER
Application Notes
Mechanical Outline
Product Selector Guide
Revised 11/12/98
Features
• Single-Device: +5V input
• Remote Sense
• Input Voltage Range:
4.75V to 5.5V
• Adjustable Output Voltage
• 23-pin SIP Package
The PT6900 is a new series of plus to
minus high- performance, 12 watt voltage
converters housed in a 23-pin SIP package.
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
electrolytic capacitor is required on the
input and output for proper operation.
Standard Application
+V_IN
GND
3-7
+
Cin
Remote Sense
2
22
V_ADJ
PT6900 ^16-21
-V_OUT
9-15 8
Cout
+
GND
Remote Sense
Cin = Required 330µF electrolytic
Cout = Required 330µF electrolytic
Pin-Out Information
Pin Function
Pin
1 Do not connect
13
2 Vout Adjust
14
3 V_in
15
4 Vin
16
5 Vin
17
6 V_in
18
7 Vin
19
8 Remote Sense GND 20
9 GND
21
10 GND
22
11 GND
23
12 GND
Function
GND
GND
GND
Vout
Vout
V_out
Vout
Vout
V_out
Remote Sense Vout
Do not connect
Ordering Information
PT6901t = -2.0 Volts
PT6902t = -5.2 Volts
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
(T_a= 25°C unless noted)
Output Current
Symbols
Io
Input Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
Vo Ripple/Noise
Transient Response
with C_out = 330µF
Efficiency
Switching Frequency
Absolute Maximum
Operating Temperature Range
Recommended Operating
Temperature Range
Vin
∆Vo
Regline
Reg_load
Vn
ttr
V_os
η
ƒo
Ta
Ta
Note: Case must be connected to
ground pins for proper operation
Conditions
Ta = +60°C, 200 LFM, pkg N Vo = -2.0V
V_o = -5.2V
Ta = +25°C, natural convection Vo = -2.0V
V_o = -5.2V
0.1A ≤ Io ≤ Imax
Vin = +5V, Io = Imax
0°C ≤ Ta ≤ +60°C
4.75V ≤ Vin ≤ 5.5V, Io = Imax
V_in = +5V, 0.1 ≤ I_o ≤ I_max
Vin = +5V, Io = Imax
Vo = -2.0V
V_o = -5.2V
Io step between 0.5xImax and Imax
V_o over/undershoot
V_o = -2.0V
Vo = -5.2V
V_in = +5V, I_o = 0.5xI_max,
V_o = -2.0V
4.75V ≤ Vin ≤ 5.5V
0.1A ≤ I_o ≤ I_max
—
Forced airflow = 200 LFM
Over Vin and Io Ranges
PT6900 SERIES
Min
Typ
0.1^*
—
0.1^*
—
0.1^*
—
0.1^*
—
4.75
—
Vo-0.05
—
—
±0.5
—
±0.5
—
40
—
100
—
100
—
100
—
200
—
70
500
—
0
—
0
—
Max
6
2.5
6
2.5
5.5
Vo+0.05
±1.0
±1.0
—
—
—
—
—
—
—
+85
Units
A
A
A
A
V
V
%
%
mV
mV
µSec
mV
mV
%
kHz
°C
+60
°C
Storage Temperature
Ts
—
-40
Weight
—
Vertical/Horizontal
—
* ISR-will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected.
—
28/33
+125
—
°C
grams
28
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