Specifications are subject to change without notice.

Customers should verify device performance in their specific applications.

9

SX(T)10A-3-5SA SIP Non-Isolated Power Module

Overcurrent Protection

The device has an internally set output current limit to protect it from overloads, placing the unit in hiccup mode. Once the overload is

removed the converter automatically resumes normal operation. No user adjustments are available. An external fuse in series with the

input voltage is also required for complete overload protection.

Input Undervoltage Lockout

The device operation is disabled if the input voltage drops below the specified input range. Once the input returns to the specified

range operation automatically resumes. No user adjustments are available.

Output Voltage Setting

The output voltage can be programmed to any voltage between 0.75 Vdc and 3.3 Vdc by connecting a single resistor between the trim

pin and the GND pin of the module, as shown in Fig. 25 below.

If left open circuit the output voltage will default to 0.75 Vdc. The correct Rtrim value for a specific voltage can be calculated using the

following equation:

Rtrim = [21.07/(Vo-0.7525)-5.11] KΩ

For example, to set the SX(T)10A-3-5SA to 3.3 V the following

Rtrim resistor must be used:

Rtrim = [21.07/(3.3-0.7525)-5.11] KΩ

Rtrim = 3.161 kΩ,

The closest standard 1 % E96 value is 3.16 kΩ.

Table 1 provides the Rtrim values required for some common output

voltage set points. The nearest standard E96 1 % resistor value is also given.

Operating Information (Continued)

ON/OFF

TRIM

GND

LOAD

Rtrim

Fig. 25 Circuit Configuration to Program Output

Voltage using an External Resistor

SX(T)10A-3-5SA Rtrim Values

Vo (V)

Rtrim (k

Ω)

1 % Value

0.75

Open

Open

1.0

80.02

80.6

1.2

41.97

42.2

1.5

23.08

23.2

1.8

15.00

15.0

2.0

11.78

11.8

2.5

6.947

6.98

3.3

3.161

3.16

Table 1

The output voltage of the device can also be set by applying a voltage between the TRIM and GND pins. The Vtrim equation can be

written as follows:

Vtrim = (0.7 – 0.1698 x{Vo – 0.7225))

To set Vo = 3.3 V, the Vtrim required would therefore be 0.2670 V.

Table 2 provides the Vtrim values required for some common output voltage set points.