PWP Package 20-Pin HTSSOP Top …
Texas InstrumentsUnited States
IC REG BUCK 3.3V 3A 20HTSSOP
TPS54316PWPR is a 3V to 6V input, 3.3V fixed output, 3A continuous output current synchronous buck PWM switcher in a 20-pin HTSSOP (PWP) package, featuring integrated 60mΩ MOSFETs and 350kHz or 550kHz switching frequencies.Checked against the datasheet
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Technical parameters
Key specs
Input voltage3 ~ 6 V
Output voltage3.3 VTyp: 3.3 V (TJ=25°C，VIN=5 V)，Tolerance: -2.5% to 2.5% (4 V ≤ VIN ≤ 6 V，0 ≤ IL ≤ 3 A，-40°C ≤ TJ ≤ 125°C)
Output current3 AMax
Switching frequency280 ~ 700 kHzFixed: 350 kHz (FSEL ≤ 0.8 V，RT open) or 550 kHz (FSEL ≥ 2.5 V
Datasheet-verified parameters
21 items| Parameter | Value and test conditions | Source |
|---|---|---|
| Input voltage range | Min: 3 V, Max: 6 V | |
| Output voltage | Typ: 3.3 V (TJ=25°C, VIN=5 V); Tolerance: -2.5% to 2.5% (4 V ≤ VIN ≤ 6 V, 0 ≤ IL ≤ 3 A, -40°C ≤ TJ ≤ 125°C) | |
| Output current | Max: 3 A (Continuous) | |
| Switching frequency | Fixed: 350 kHz (FSEL ≤ 0.8 V, RT open) or 550 kHz (FSEL ≥ 2.5 V, RT open); Adjustable: 280 kHz to 700 kHz | |
| Package | HTSSOP (20) PWP | |
| Operating temperature | -40°C to 85°C |
All parameters (21)
| Power | |
|---|---|
| Current - Output | 3A |
| Voltage - Input (Max) | 6V |
| Voltage - Input (Min) | 3V |
| Voltage - Output (Max) | - |
| Voltage - Output (Min/Fixed) | 3.3V |
| AC and DC characteristics | |
| Frequency - Switching | 350kHz, 550kHz |
| Environment and package | |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT); Digi-Reel® |
| Package / Case | 20-PowerTSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-HTSSOP |
| Other | |
| Base Product Number | TPS54316 |
| Function | Step-Down |
| Mfr | Texas Instruments |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Output Type | Fixed |
| Product Status | Active |
| Series | SWIFT™ |
| Synchronous Rectifier | Yes |
| Topology | Buck |
Pinout and package
PWP Package 20-Pin HTSSOP Top …
| Pin | Name | Function | Source |
|---|---|---|---|
| 1 | AGND: Analog ground. Return for compensation network/output divider, slow-start capacitor, VBIAS capacitor, RT resistor and FSEL pin. Make PowerPAD connection to AGND. | ||
| 2 | VSENSE: Error amplifier inverting input. Connect directly to output voltage sense point. | ||
| 3 | NC: No connection | ||
| 4 | PWRGD: Powergood open-drain output. Hi-Z when VSENSE ≥ 90% Vref, otherwise PWRGD is low. Note that output is low when SS/ENA is low or internal shutdown signal active. | ||
| 5 | BOOT: Bootstrap input. 0.022-μF to 0.1-μF low-ESR capacitor connected from BOOT to PH generates floating drive for the high-side FET driver. | ||
| 17 | VBIAS: Internal bias regulator output. Supplies regulated voltage to internal circuitry. Bypass VBIAS pin to AGND pin with a high quality, low ESR 0.1-μF to 1.0-μF ceramic capacitor. | ||
| 18 | SS/ENA: Slow-start/enable input/output. Dual function pin which provides logic input to enable/disable device operation and capacitor input to externally set the start-up time. | ||
| 19 | FSEL: Frequency select input. Provides logic input to select between two internally set switching frequencies. | ||
| 20 | RT: Frequency setting resistor input. Connect a resistor from RT to AGND to set the switching frequency, fs. | ||
| 11-13 | PGND: Power ground. High current return for the low-side driver and power MOSFET. Connect PGND with large copper areas to the input and output supply returns, and negative terminals of the input and output capacitors. | ||
| 14-16 | VIN: Input supply for the power MOSFET switches and internal bias regulator. Bypass VIN pins to PGND pins close to device package with a high quality, low ESR 1-μF to 10-μF ceramic capacitor. | ||
| 6-10 | PH: Phase input/output. Junction of the internal high and low-side power MOSFETs, and output inductor. |
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