TPS60400DBVR - 60mA Charge Pump Inverter | Texas Instruments
Référence : TPS60400DBVR ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.55 | $1,55 |
| 10 | $1.32 | $13,20 |
| 100 | $1.05 | $105,00 |
| 500 | $0.86 | $430,00 |
| 1 000 | $0.69 | $690,00 |
| 3 000 | $0.54 | $1 620,00 |
TPS60400DBVR Présentation
A charge pump is a DC-DC converter that uses capacitors instead of inductors to store and transfer energy, making it ideal for low-current, low-noise, space-constrained applications. Within the broader power management hierarchy, charge pumps sit alongside LDOs and switching regulators as a third topology option - cheaper and smaller than an LDO when output regulation is not needed, lower noise than an inductive buck-boost converter when the load is light. The TPS6040x family specifically targets negative rail generation, which is essential for biasing op-amps, sensor interfaces, and LCD panels.
Key specifications of the TPS60400DBVR include: input voltage range of 1.6 V to 5.5 V, output current up to 60 mA, typical output resistance of 15 ohms at 25 °C, quiescent current around 1 mA, and an operating temperature range from -40 °C to +85 °C. The SOT-23-5 footprint consumes less than 30 mm² of board area, and the device requires no magnetic components.
The TPS60400DBVR uses a two-stage switched-capacitor inverter in which internal MOSFETs alternately charge and discharge flying capacitors each switching cycle. Compared to inductive boost/SEPIC topologies, this architecture eliminates inductor DCR losses, EMI ringing, and radiated magnetic fields, while reducing BOM cost and PCB height. The variable-frequency control loop modulates the oscillator with load current to maintain reasonable efficiency across the full 0-60 mA range.
Typical applications include generating small negative bias rails for operational amplifiers, ADCs, and DACs; powering LCD contrast/bias circuits; supplying GaAs FET gate bias in RF subsystems; and creating -5 V supplies from a 3.3 V logic rail in portable, battery-powered, or industrial embedded designs where inductors cannot be used.
For design success, prioritize low-ESR ceramic capacitors on both flying and reservoir positions, keep the input supply well-bypassed, and verify that 60 mA covers the worst-case dynamic load. When regulation is required, follow the TPS60400DBVR with an LDO such as a TPS7A30 series negative LDO.
This page integrates distributor pricing, verified drop-in pin-compatible alternatives, and practical design notes not duplicated in the bare manufacturer datasheet.
Alternatives de remplacement direct pour TPS60400DBVR — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
TPS60400DBVRG4
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS60401DBVR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS60402DBVR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS60403DBVR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TPS60400DBVR Valeurs maximales et caractéristiques électriques
| Topologie | Charge Pump Voltage Inverter (Unregulated) |
| Plage de tension d'entrée | 1.6 V to 5.5 V |
| Tension de sortie | -Vin (inverted input) |
| Courant de sortie maximal | 60 mA |
| Typical Output Resistance | 15 ohm at 25 C |
| Courant de repos | 1 mA (typical) |
| Fréquence de commutation | 50 kHz to 250 kHz (variable, load-dependent) |
| External Capacitors Required | 3 x 1 uF ceramic |
| Température de fonctionnement | -40 C to +85 C |
| Boîtier | SOT-23-5 (DBV) |
| Type de montage | Surface Mount |
| Niveau MSL | 1 (unlimited) |
| Statut RoHS | Compliant |
| Lead Free | Yes |
| Nombre de broches | 5 |
Configuration des broches de TPS60400DBVR
| Broche 1 | NC — Not connected (per datasheet) |
| Broche 2 | IN — Positive supply input (1.6 V to 5.5 V) |
| Broche 3 | GND — Common ground reference |
| Broche 4 | OUT — Negative output voltage (-Vin) |
| Broche 5 | CAP- — Charge-pump flying capacitor (negative terminal) |
Applications typiques
TPS60400DBVR convient pour 6 applications: Negative Bias Supply for Operational Amplifiers, LCD Contrast / Bias Voltage Generation, GaAs FET Gate Bias in RF Subsystems, Battery-Powered Negative Rail for Handheld Instruments, Industrial Sensor Signal Conditioning, IoT Sensor Node Bias Generator.
Negative Bias Supply for Operational Amplifiers
The TPS60400DBVR generates a low-current negative rail that powers the V- pin of dual-supply op-amps, ADCs, and DACs in instrumentation circuits. With a 3.3 V or 5 V input it produces -3.3 V or -5 V at up to 60 mA, suitable for biasing audio line drivers, instrumentation amplifiers, and precision signal-conditioning chains where a mid-rail virtual ground is not acceptable. Using three small ceramic capacitors instead of an inductive DC-DC inverter, the TPS60400DBVR keeps the BOM count low and the PCB footprint under 30 mm². Designers typically follow the inverter with a low-noise negative LDO such as the TPS7A30xx when tighter regulation is required. The unregulated 15 ohm output resistance still delivers acceptable ripple for most analog rails downstream of the LDO.
Recommandé
LCD Contrast / Bias Voltage Generation
Small character LCD modules and certain graphical panels require a small negative bias voltage (typically -3 V to -5 V) on the Vo or VEE pin to set display contrast. The TPS60400DBVR produces this rail directly from the logic 3.3 V or 5 V supply with only 60 mA of budget - more than adequate to sink the bias network. Compared to using a discrete ICL7660 plus a regulator, the TPS60400DBVR offers TI's superior quiescent current (around 1 mA) and tighter switching frequency control, reducing audible noise in handheld products. The SOT-23-5 footprint fits comfortably behind the LCD connector, saving board real estate in compact consumer designs.
Recommandé
GaAs FET Gate Bias in RF Subsystems
Many RF front-end components (GaAs pHEMT switches, LNAs, attenuators) require a stable negative gate bias of -3 V to -5 V to set quiescent operating points. The TPS60400DBVR generates this rail from a low-voltage RF synthesizer or transceiver supply, matching the small current demand of gate bias networks (typically <10 mA per stage). With its 50 kHz to 250 kHz variable switching frequency synchronized loosely with the local oscillator, the inverter adds no inductors that could couple into the RF path. The result is a clean, compact bias source for cellular IoT modules, GPS front-ends, and 2.4 GHz industrial radios where every nanohenry of stray inductance matters.
Recommandé
Battery-Powered Negative Rail for Handheld Instruments
Portable multimeters, medical patches, and field-test instruments often run from a single Li-Ion cell but need a small negative rail to bias a sensor bridge or analog front-end. The TPS60400DBVR's 1.6 V to 5.5 V input range lets the inverter operate directly from a discharging Li-Ion pack (4.2 V down to 3.0 V) without a boost converter in front, while drawing only about 1 mA of quiescent current. The unregulated output follows -Vin, automatically tracking cell voltage and simplifying closed-loop design. In sleep mode, cutting the upstream supply forces the inverter into zero current, an efficient power-down strategy for energy-budgeted designs.
Recommandé
Industrial Sensor Signal Conditioning
Bridge sensors, thermocouple amplifiers, and strain-gauge front-ends in industrial 24 V systems often require ±5 V or ±12 V supplies, but only at low currents. The TPS60400DBVR can be paired with a small isolated DC-DC front end to create the negative rail, generating -5 V from a 5 V tapped bias winding with 60 mA capacity. Its -40 °C to +85 °C operating range and AEC-Q100-qualified family member (TPS60400-Q1) make this topology attractive for factory automation. Sourcing the negative rail from a charge pump instead of an LDO also avoids the high dissipation that would otherwise occur on the negative linear regulator.
Recommandé
IoT Sensor Node Bias Generator
Compact wireless sensor nodes that harvest or store energy in a small Li-Ion / Li-Po cell benefit from a compact negative bias source for components like supercapacitor balancing circuits, OLED displays, or piezo buzzer drivers. The TPS60400DBVR draws on 60 mA on demand and approximately 1 mA quiescent current, fitting well into the duty-cycled power budget of an IoT endpoint. With its SOT-23-5 footprint and three 1 µF ceramic caps, the entire inverter occupies less than 50 mm², leaving room for the radio SoC and antenna. Pair the TPS60400DBVR with a separate enable-controlled positive LDO to achieve sequenced power-up.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TPS60400DBVR — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TPS60400DBVRG4 | TPS60401DBVR | TPS60402DBVR | TPS60403DBVR |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOT-23-5 (DBV) | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same | SOT-23-5 (DBV) - same |
| Topology | Charge pump inverter (-Vin) | Charge pump inverter (-Vin) | Charge pump inverter (fixed -5 V) | Charge pump doubler (2 x Vin) | Charge pump inverter (-Vin) |
| Input Voltage Range | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 2.5 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V |
| Output Current | 60 mA | 60 mA | 60 mA | 60 mA | 60 mA |
| Output Resistance | 15 ohm | 15 ohm | 15 ohm | 15 ohm | 15 ohm |
| External Capacitors | 3 x 1 uF | 3 x 1 uF | 3 x 1 uF | 3 x 1 uF | 3 x 1 uF |
| RoHS Compliance | Compliant (DBVR) | Compliant (G4 suffix) | Compliant | Compliant | Compliant |
Principaux différenciateurs
- 60 mA output at low BOM cost with only three small ceramic capacitors (vs TPS60402DBVR)
- Pb-Free / RoHS-green ordering option G4 variant (vs TPS60400DBVRG4)
- Same family pinout - longest-running TI charge pump portfolio (vs TPS60401DBVR)
Notes de conception
Use three 1 µF X5R or X7R ceramic capacitors (the data sheet explicitly names these dielectrics) as close to the IC pins as possible: one between CAP+ and CAP-, one between IN and GND, and one between OUT and GND. Keep all three capacitor loops short to minimize loop area and noise injection. With a typical 15 ohm output resistance, the regulator exhibits ~0.9 V of droop at full 60 mA load, so place the bulk reservoir capacitor adjacent to the output pin and follow with an LDO if a tighter rail is required.
Do not load the TPS60400DBVR above 60 mA - the internal MOSFETs are not thermally protected for sustained over-current. Do not use electrolytic or tantalum capacitors on the flying-capacitor node (CAP+, CAP-); ESR is too high and will cause excessive switching loss. If the application requires shutdown, switch off the upstream positive supply rather than trying to ground a control pin, since the TPS60400DBVR does not have an enable input.
Route the GND return directly to the PCB ground plane and tie the negative output (OUT) return to the same ground plane near the IC. Because the inverter switches up to 250 kHz, avoid routing the input supply across long distances before reaching the IN pin; use a 1 µF bypass cap locally and a ferrite bead if the source is a noisy regulator. Estimated: with 1 µF ceramics the converter's typical ripple is below 50 mVpp - add a small LC pi-filter when tighter ripple is required.
Informations de conformité
Compliant with RoHS and REACH per TI product page; the DBVRG4 suffix is the explicit Pb-Free / RoHS-green catalog part. Halogen-free status not explicitly stated in verified web data.
