STBP110 datasheet(8/40 Pages) STMICROELECTRONICS

8 / 40 page

Pin description

STBP110

8/40

Doc ID 018687 Rev 3

The EN input is equipped with an internal pull-down resistor of 250 k

Ω (typical value). If

there is no need to use this input, it may be left floating or, preferably, connected to GND.

For VIN lower than 2.5 V (max.), the pull-down resistor is internally disconnected to lower the

EN pin input current in case the external AC adapter is not connected, the application is

running from an internal battery and the STBP110 device is disabled.

To improve safety and to prevent damage to application circuits in the event of extreme

voltage or current conditions, an optional protective resistor REN can be connected between

the EN input and the controller output (see Figure 4). The protective resistor forms a voltage

divider with the internal pull-down resistor, which limits the maximum possible REN value

with respect to the VIH(EN) threshold of EN input and the controller’s output voltage for logic

high, VOH. For the worst case, the highest protective resistor value is

RENmax = RPD(EN)min x (VOH / VIH(EN) - 1),

where RPD(EN)min is 100 kΩ and VIH(EN) is 1.2 V.

For most cases, an REN value of 10 kΩ to 100 kΩ is adequate.

The FLT output is in Hi-Z state when the device is disabled by EN input.

2.5

No connect (NC)

Pin 3, 6, and 7 are no connect (NC). They may be left floating or connected to GND.

2.6

Ground (GND)

Ground terminal. All voltages are referenced to GND. The exposed thermal pad is internally

connected to GND.

Table 1.

Pin description and signal names

Name

Type

Function

Input/supply

Input voltage

GND

Supply

Ground

3, 6, 7

Not connected

4FLT

Output

Fault indication output (open-drain)

5EN

Input

Enable input (pull-down resistor to GND)

OUT

Output

Output voltage

STBP110 数据表(PDF) 8 Page - STMicroelectronics

STBP110 数据表(HTML) 8 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

数据表下载