TPS63710DRRR - 1A Inverting Buck Converter -5.5V | TI
MPN: TPS63710DRRR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 10 | $1.55 | $15.50 |
| 100 | $1.51 | $151.00 |
| 500 | $1.45 | $725.00 |
| 1,000 | $1.38 | $1,380.00 |
Drop-in alternatives for TPS63710DRRR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesTPS63710DRRR Maximum Ratings & Electrical Characteristics
| Topology | Inverting Buck (Synchronous) |
| Output Type | Negative Adjustable |
| Output Voltage Range | 0 V to -5.5 V |
| Maximum Output Current | 1 A (depending on VIN-to-VOUT ratio) |
| Control Topology | Fixed-Frequency PWM |
| Noise Feature | Filtered reference system, low 1/f noise up to ~100 kHz (CAP pin) |
| Number of Outputs | 1 |
| Package | 12-WFDFN Exposed Pad (DRR) |
| Mounting Type | Surface Mount |
| Input Voltage Range | [DATA_NEEDED: input voltage range] |
| Switching Frequency | [DATA_NEEDED: switching frequency] |
| Quiescent Current | [DATA_NEEDED: quiescent current] |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Applications Target | High-performance telecommunication systems |
| RoHS Status | Compliant |
TPS63710DRRR Pin Configuration
| Pin 1 | PGND β Power ground |
| Pin 2 | SW β Switch node - connect power inductor |
| Pin 3 | SW β Switch node - connect power inductor |
| Pin 4 | VIN β Positive input supply |
| Pin 5 | VIN β Positive input supply |
| Pin 6 | CAP β Filtered reference capacitor pin for low 1/f noise |
| Pin 7 | AGND β Analog ground / reference ground |
| Pin 8 | FB β Feedback input for output voltage adjustment |
| Pin 9 | EN β [DATA_NEEDED: enable pin assignment] |
| Pin 10 | [DATA_NEEDED: pin 10 name] β [DATA_NEEDED] |
| Pin 11 | [DATA_NEEDED: pin 11 name] β [DATA_NEEDED] |
| Pin 12 | PAD β Exposed thermal pad - connect to PGND |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS63710DRRR is suitable for 6 applications: Telecom Negative Bias Rails, RF Amplifier Bias Supply, Op-Amp Negative Rail Generation, LCD Display / VCOM Negative Bias, Data Converter Negative Supply, Industrial Instrumentation Dual-Rail Supplies.
Telecom Negative Bias Rails
High-performance telecommunication line cards frequently require a quiet negative rail for biasing RF and analog circuitry. The TPS63710 fits this role because its filtered reference system suppresses 1/f noise from the low-frequency limit up to around 100 kHz, per the TI datasheet, and its synchronous inverting buck topology delivers up to 1 A depending on the VIN/VOUT ratio. Placed on a card powered from a positive intermediate bus, it replaces discrete inverter stages with a single integrated solution; the fixed-frequency PWM operation keeps switching spurs predictable for system EMI budgets.
Recommended
RF Amplifier Bias Supply
GaAs and similar RF power amplifiers need stable negative gate-bias rails with minimal noise to avoid amplitude and phase modulation of the RF signal. The TPS63710 addresses this with up to 1 A output capability and low 1/f noise achieved through the external CAP-pin filter capacitor, as described in the TI datasheet Rev. A. In a typical design the converter generates -3 V to -5 V from a 5 V or 12 V rail, and a small RC filter or negative LDO can further clean the rail; efficiency remains high because the synchronous buck architecture minimizes conduction losses.
Recommended
Op-Amp Negative Rail Generation
Precision analog signal chains built around op-amps require a clean negative supply, especially for high-voltage amplifiers operating from dual rails. The TPS63710 generates the negative rail down to -5.5 V from a single positive input, eliminating a second winding or charge pump stage. Its 1 A capability covers multi-amplifier boards, and the filtered reference keeps low-frequency noise out of the analog domain where it would otherwise appear directly at amplifier outputs. Fixed-frequency PWM lets designers place switching spurs away from sensitive signal bands with simple LC filtering.
Recommended
LCD Display / VCOM Negative Bias
Display modules and VCOM drivers require a stable negative voltage rail derived from a positive system supply. The TPS63710 converts a positive input to a negative rail as low as -5.5 V with up to 1 A, adequate for panel bias and backlight driver biasing. Because the output is adjustable and regulated with fixed-frequency PWM, brightness-dependent load steps are rejected without visible flicker, and the low 1/f noise from the CAP-pin filtered reference helps avoid visible artifacts in high-contrast panels. Exposed-pad WFDFN packaging simplifies thermal layout in thin display electronics.
Recommended
Data Converter Negative Supply
High-performance ADCs and DACs sometimes specify a small negative supply for input conditioning, analog front ends, or driver amplifiers. The TPS63710 provides this rail from a single positive input with up to 1 A and, critically, with low 1/f noise up to around 100 kHz thanks to its filtered reference system - noise on this rail would otherwise degrade the converter's noise floor and spurious-free dynamic range. The TI datasheet application section shows a compact external component set of inductor plus ceramic capacitors, allowing the negative rail to sit near the data converter without dedicated shielding.
Recommended
Industrial Instrumentation Dual-Rail Supplies
Industrial instruments, test equipment, and sensor front ends commonly need both positive and negative rails from a single supply input. The TPS63710 supplies the negative rail down to -5.5 V at up to 1 A depending on the VIN/VOUT ratio, complementing standard positive buck converters on the same board. The synchronous topology and fixed-frequency PWM deliver high efficiency and predictable EMI for dense enclosures, while the low-noise filtered reference suits sensitive measurement circuitry where supply-induced 1/f noise would limit resolution.
Recommended
Recommended Products Summary
Engineering reference data for TPS63710DRRR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS63700DSSR | LM27761 | TPS60400DBVR |
|---|---|---|---|---|
| Package | 12-WFDFN Exposed Pad (DRR) | WSON-10 (DSS) - different footprint | WSON-12 - different pinout | SOT-23-5 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Topology | Synchronous inverting buck | Inverting buck | Charge pump + LDO | Charge pump inverter |
| Output Current | 1 A (ratio dependent) | [DATA_NEEDED] | ~250 mA | ~60 mA |
| Max Negative Output | -5.5 V | -15 V | -5 V (regulated) | -VIN (unregulated) |
| Low-Noise Filtered Reference | Yes (CAP pin, up to ~100 kHz) | No | LDO-based low noise | No |
| Drop-In Replacement | N/A | No - different package/pinout | No - different package/pinout | No - different package |
| Unit Price (qty 1, as of 2026-08-30) | ~$1.65 (LCSC from $1.51) | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Filtered reference system for low 1/f noise (vs TPS63700DSSR)
- Higher current than charge pump alternatives (vs LM27761)
- Regulated adjustable negative output (vs TPS60400DBVR)
Design Notes
In the inverting buck topology, the IC ground pin rides at the negative output voltage, so the effective input voltage stress and maximum deliverable current depend on the input-to-output voltage ratio. Always verify the operating point against the datasheet current-limit curves before finalizing the design; a -5.5 V output from a 12 V input draws far more inductor peak current than a -1 V output from 5 V.
To achieve the specified low 1/f noise, fit the recommended external filter capacitor on the CAP pin as described in the TI TPS63710 datasheet (Rev. A). This filtered reference suppresses low-frequency noise up to around 100 kHz. Omitting or undersizing this capacitor negates the key low-noise advantage of the part; use a low-leakage ceramic capacitor with the value recommended in the datasheet application section.
Keep the power loop (VIN, SW, inductor, output capacitor, PGND) as short and compact as possible in the 12-WFDFN footprint, and connect the exposed thermal pad to a solid ground plane with multiple vias for thermal and EMI performance. Place the FB divider close to the IC and route the feedback trace away from the switch node to prevent ripple injection and jitter.
Compliance Information
RoHS compliance per standard TI product listing on distributor sites. Detailed REACH/halogen-free declarations: consult TI product page for exact OPN.
