Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- PACKAGE SPECIFICATIONS
- ELECTRICAL CHARACTERISTICS
- ELECTRICAL CHARACTERISTICS
- PTV12010W Characteristic Data; 1.2 V to 5.5 VThe electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the converter. Applies to , , and .The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum operating temperatures. Derating limits apply to modules soldered directly to a 100 mm x 100 mm double-sided PCB with 2 oz. copper. Applies to , , and .
- PTV12010L Characteristic Data; 0.8 V to 1.8 VThe electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the converter. Applies to , , and .The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum operating temperatures. Derating limits apply to modules soldered directly to a 100 mm x 100 mm double-sided PCB with 2 oz. copper. Applies to .
- DEVICE INFORMATION
- APPLICATION INFORMATION
- Features of the PTH Family of Non-Isolated Wide Output Adjust Power Modules
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APPLICATION INFORMATION
ADJUSTING THE OUTPUT VOLTAGE
PTV12010
+
GND
GND GND
V
O
V
O
Adj
V
O
C
O
100 mF
(Optional)
R
SET
1%, 0.05W
PTV12010L
PTV12010W
SLTS234B – DECEMBER 2004 – REVISED FEBRUARY 2007
The V
O
Adjust control (pin 8) sets the output voltage of the PTV12010 product. The adjustment range is from
1.2 V to 5.5 V for the W-suffix modules and 0.8 V to 1.8 V for L-suffix modules. The adjustment method requires
the addition of a single external resistor, R
SET
, that must be connected directly between the V
O
Adjust and GND
(pin 1 or 2). Table 1 gives the standard value of the external resistor for a number of standard voltages, along
with the actual output voltage that this resistance value provides. For other output voltages, the value of the
required resistor can either be calculated using Equation 1 or simply selected from the range of values given in
Table 3 .Figure 11 shows the placement of the required resistor.
Table 1. Standard Values of R
SET
for Common Output Voltages
PTV12010W PTV12010L
V
O
(V) R
SET
(k Ω ) V
O
(V) R
SET
(k Ω ) V
O
(V)
(Required) (Standard Value) (Actual) (Standard Value) (Actual)
5 0.280 5.009 N/A N/A
3.3 2.0 3.294 N/A N/A
2.5 4.32 2.503 N/A N/A
2 8.06 2.010 N/A N/A
1.8 11.5 1.801 0.130 1.800
1.5 24.3 1.506 3.57 1.499
1.2 Open 1.200 12.1 1.201
1.1 N/A N/A 18.7 1.101
1.0 N/A N/A 32.4 0.999
0.9 N/A N/A 71.5 0.901
0.8 N/A N/A Open 0.800
(1) A 0.05-W rated resistor may be used. The tolerance should be 1%, with temperature stability of 100 ppm/°C (or
better). Place the resistor as close to the regulator as possible. Connect the resistor directly between pin 8 and pins
1 or 2, using dedicated PCB traces.
(2) Never connect capacitors from V
o
Adj to either GND or V
o
. Any capacitance added to the V
o
Adj pin affects the
stability of the regulator.
Figure 11. V
O
Adjust Resistor Placement
8
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