ZHCSF74A March 2016 – July 2016 TPS7A87
PRODUCTION DATA.
| PIN | DESCRIPTION | ||
|---|---|---|---|
| NAME | NO. | I/O | |
| EN1 | 20 | I | Enable pin for each channel. These pins turn the regulator on and off. If VENx(1) ≥ VIH(ENx), then the regulator is enabled. If VENx ≤ VIL(ENx), then the regulator is disabled. The ENx pin must be connected to INx if the enable function is not used. |
| EN2 | 6 | ||
| FB1 | 16 | I | Feedback pin connected to the error amplifier. Although not required, a 10-nF feed-forward capacitor from FBx to OUTx (as close to the device as possible) is recommended to maximize ac performance. The use of a feed-forward capacitor can disrupt PGx (power good) functionality. See the Feed-Forward Capacitor (CFFx) and Setting the Output Voltage (Adjustable Operation) sections for more details. |
| FB2 | 10 | ||
| GND | 3, 13 | — | Ground pin. These pins must be connected to ground, the thermal pad, and each other with a low-impedance connection. |
| IN1 | 1, 2 | I | Input supply pin for LDO 1. A 10 µF or greater input capacitor is required. Place the input capacitor as close to the input as possible. |
| IN2 | 4, 5 | I | Input supply pin for LDO 2. A 10 µF or greater input capacitor is required. Place the input capacitor as close to the input as possible. |
| NR/SS1 | 19 | — | Noise-reduction and soft-start pin for each channel. Connecting an external capacitor between this pin and ground reduces reference voltage noise and also enables the soft-start function. Although not required, a 10 nF or larger capacitor is recommended to be connected from NR/SSx to GND (as close to the pin as possible) to maximize ac performance. See the Noise-Reduction and Soft-Start Capacitor (CNR/SSx) section for more details. |
| NR/SS2 | 7 | ||
| OUT1 | 14, 15 | O | Regulated output for LDO 1. A 10-μF or larger ceramic capacitor (5 μF or greater of effective capacitance) from OUTx to ground is required for stability and must be placed as close to the output as possible. Minimize the impedance from the OUT1 pin to the load. See the Input and Output Capacitor (CINx and COUTx) section for more details. |
| OUT2 | 11, 12 | O | Regulated output for LDO 2. A 10-μF or larger ceramic capacitor (5 μF or greater of effective capacitance) from OUTx to ground is required for stability and must be placed as close to the output as possible. Minimize the impedance from the OUT2 pin to the load. See the Input and Output Capacitor (CINx and COUTx) section for more details. |
| PG1 | 17 | O | Open-drain power-good indicator pins for the LDO 1 and LDO 2 output voltages. A 10-kΩ to 100-kΩ external pullup resistor is required. These pins can be left floating or connected to GND if not used. The use of a feed-forward capacitor can disrupt power-good functionality. See the Feed-Forward Capacitor (CFFx) section for more details. |
| PG2 | 9 | ||
| SS_CTRL1 | 18 | I | Soft-start control pin for each channel. Connect these pins either to GND or INx to allow normal or fast charging of the NR/SSx capacitor. If a CNR/SSx capacitor is not used, SS_CTRLx must be connected to GND to avoid output overshoot. |
| SS_CTRL2 | 8 | ||
| Thermal pad | — | Connect the thermal pad to a large-area ground plane. The thermal pad is internally connected to GND. | |