S-13A1A10-U5T1U3 - 1A Low Iq LDO, 1V Fixed | ABLIC
Référence : S-13A1A10-U5T1U3 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0.95 | $0,95 |
| 10 | $0.86 | $8,60 |
| 100 | $0.72 | $72,00 |
| 500 | $0.58 | $290,00 |
| 1 000 | $0.46 | $460,00 |
| 3 000 | $0.38 | $1 140,00 |
S-13A1A10-U5T1U3 Présentation
An LDO (low-dropout) linear regulator is a type of linear voltage regulator that can maintain a regulated output voltage even when the input voltage approaches the output voltage within a few hundred millivolts. Within the broader hierarchy, an LDO is a subtype of linear regulator, which itself belongs to the voltage regulator family inside the power management IC category. LDOs are preferred over switching regulators in noise-sensitive analog and RF rails because they introduce no switching ripple, at the cost of lower efficiency at large input-to-output voltage differentials.
Key specifications include a 5.5 V maximum input voltage, 1 A continuous output current, low quiescent current rated in the low-microamp range for the A1 sub-family, and built-in protections for thermal shutdown, overcurrent limiting, and short-circuit protection. The S-13A1A10-U5T1U3 ships with a fixed 1.0 V output, eliminating external resistor dividers and reducing PCB footprint. Output accuracy is specified at plus or minus 1.5 percent typical, sufficient for digital logic rails and low-voltage ASIC cores.
The device uses a CMOS pass element that achieves low dropout and low ground-pin current simultaneously, an advantage over older bipolar LDOs that drew higher quiescent current at full load. The internal reference and feedback network are trimmed during production, providing stable output across the -40C to +85C operating range. The exposed tab on the SOT-89-5 package provides a low thermal resistance path to PCB copper, enabling 1 A delivery without an external heatsink when the layout includes adequate copper area.
Typical applications include single-cell Li-ion powered portable devices, microcontroller core rails, sensor and module supplies, USB-powered peripherals, point-of-load regulation after a switching converter, and standby rails in white goods. The 1.0 V fixed variant is commonly paired with 1.2 V or 1.8 V variants of the same family when multiple low-voltage rails are required.
When designing with this part, ensure input and output ceramic capacitors placed within 2-3 mm of the device pins, use the exposed thermal pad as the primary heat-dissipation path, and respect the absolute maximum input voltage of 6.5 V (recommended 5.5 V operating maximum). For higher output voltages, select the corresponding fixed-voltage variant from the S-13A1 Series rather than attempting resistor programming on a fixed-output MPN.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical layout guidance not consolidated on any single manufacturer or distributor page.
Alternatives de remplacement direct pour S-13A1A10-U5T1U3 — 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 :
S-13A1B10-U5T1U3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S-13A1A12-U5T1U3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S-13A1A18-U5T1U3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S-13A1A33-U5T1U3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S-13A1H34-U5T1U3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
S-13A1A10-U5T1U3 Valeurs maximales et caractéristiques électriques
| Regulator Type | Low-Dropout (LDO), Positive Fixed |
| Output Polarity | Positive |
| Tension de sortie | 1.0 V fixed |
| Output Voltage Type | Fixed |
| Output Current | 1 A (continuous) |
| Plage de tension d'entrée | 1.5 V to 5.5 V |
| Output Voltage Accuracy | Plus or minus 1.5 percent (typical) |
| Température de fonctionnement | -40 C to +85 C |
| Arrêt thermique | Yes (built-in) |
| Protection contre les surintensités | Yes (built-in foldback) |
| Boîtier | SOT-89-5 (HSOP-6 family) |
| Type de montage | Surface Mount |
| Niveau MSL | 1 (per JEDEC J-STD-020) |
| Statut RoHS | Halogen-free and lead-free compliant |
| Lifecycle Stage | ACTIVE |
Configuration des broches de S-13A1A10-U5T1U3
| Broche 1 | VIN — Input supply voltage (1.5 V to 5.5 V) |
| Broche 2 | GND — Ground reference |
| Broche 3 | ON/OFF — Enable input (high = regulator on) |
| Broche 4 | NC — Not connected (per datasheet) |
| Broche 5 | VOUT — Regulated 1.0 V output |
Applications typiques
S-13A1A10-U5T1U3 convient pour 8 applications: Single-Cell Li-ion Portable Device Power, Microcontroller Core Voltage Rail, Sensor and Module Power Supply, USB-Powered Peripheral Regulation, Point-of-Load Regulation After Switching Converter, Standby and White-Goods Appliance Rails, Automotive Infotainment and Body Electronics, Battery-Powered Test and Measurement Equipment.
Single-Cell Li-ion Portable Device Power
The S-13A1A10-U5T1U3's 1.0 V fixed output, 1 A peak current, and 5.5 V input tolerance make it an ideal post-regulator for single-cell Li-ion powered portable devices operating from a 3.0-4.2 V battery source. Placed after the battery pack or a switching pre-regulator, it provides a clean 1.0 V rail for low-voltage ASIC cores, image sensors, or memory interfaces without injecting switching ripple. The ultra-low quiescent current extends standby time, while the 1 A continuous rating handles transient load peaks from RF transmission bursts or camera activity. Designers should add a 1 uF X7R ceramic input capacitor and a 1 uF X7R output capacitor placed within 2 mm of the pins.
Recommandé
Microcontroller Core Voltage Rail
The S-13A1A10-U5T1U3 supplies the 1.0 V core rail for low-power microcontrollers and SoCs that require sub-1.2 V logic while the rest of the board runs on 3.3 V. The fixed 1.0 V output eliminates resistor dividers, and the plus or minus 1.5 percent accuracy meets most MCU Vcore tolerance requirements. With a thermal pad tied to a ground copper pour of at least 100 mm squared, the device delivers 1 A continuously at room temperature. Designers should confirm MCU inrush current at cold start is below the LDO's 1 A foldback limit and add a soft-start capacitor if necessary to avoid triggering OCP during firmware boot.
Recommandé
Sensor and Module Power Supply
The S-13A1A10-U5T1U3 is well matched to image sensors, BLE modules, GPS receivers, and other peripherals that operate from a 1.0 V internal rail. Its low quiescent current (in the low-microamp range for the A1 sub-family) keeps idle drain to a minimum when the sensor is in standby, and its high ripple rejection at low frequencies prevents upstream switching noise from corrupting sensitive analog measurements. Place the regulator as close as possible to the sensor's VDD pin to minimize IR drop across long traces, and pair it with a 1 uF X7R output cap plus a 0.1 uF HF bypass cap for wideband noise suppression.
Recommandé
USB-Powered Peripheral Regulation
The S-13A1A10-U5T1U3 operates from the 5 V USB VBUS rail with comfortable headroom, allowing a 5 V to 1.0 V step-down with no pre-regulator. Its 5.5 V absolute maximum tolerates USB hot-plug transients, and the built-in thermal shutdown protects the regulator during sustained short-circuit conditions at the downstream connector. For USB peripherals with multi-voltage requirements, use the S-13A1A10 for the 1.0 V core and the S-13A1A33-U5T1U3 for the 3.3 V I/O rail - both share the same SOT-89-5 footprint for consistent PCB layout.
Recommandé
Point-of-Load Regulation After Switching Converter
The S-13A1A10-U5T1U3 is commonly placed downstream of a 5 V or 3.3 V buck converter as a point-of-load post-regulator to provide ultra-low-noise 1.0 V for analog or RF circuitry. The buck converter handles the bulk step-down at high efficiency, while the LDO eliminates residual switching ripple and high-frequency noise above the buck's loop bandwidth. This hybrid architecture achieves both high overall efficiency and clean rail noise, and is standard practice for powering precision ADCs, DACs, PLLs, and VCOs. The S-13A1A10 is pin-compatible with the rest of the S-13A1 family for layout reuse across rails of different voltages.
Recommandé
Standby and White-Goods Appliance Rails
The S-13A1A10-U5T1U3 is suited to standby logic rails in white goods and home appliances, where it draws negligible quiescent current from a 5 V standby supply and powers always-on sub-circuits such as timers, displays, and low-power MCUs. The wide -40 C to +85 C operating temperature handles appliance environment extremes, and the SOT-89-5 package survives standard through-hole-free SMT assembly flows. The fixed 1.0 V output is convenient for powering the deepest sleep mode of modern appliance MCUs that drop their core voltage in standby to extend unplugged retention time.
Recommandé
Automotive Infotainment and Body Electronics
While the S-13A1A10-U5T1U3 itself is not AEC-Q100 qualified, it is commonly designed into non-safety automotive subsystems such as infotainment displays, instrument clusters, and body controllers where a clean 1.0 V rail is needed for graphics processors or memory. The fixed 1.0 V output, 5.5 V input tolerance (compatible with 12 V battery cranking transients when paired with a TVS), and wide -40 C to +85 C operating range support under-hood thermal environments. For safety-critical or AEC-Q100 applications, ABLIC offers automotive-grade ABLIC S-13A1 Series equivalents in the same SOT-89-5 footprint.
Recommandé
Battery-Powered Test and Measurement Equipment
The S-13A1A10-U5T1U3 supports handheld battery-powered test and measurement tools that require a stable, low-noise 1.0 V rail for precision analog front ends. The low quiescent current extends field-deployment battery life, and the high ripple rejection ensures that battery impedance variations during discharge do not couple noise into sensitive measurement channels. Pair it with an op-amp such as the OPA2192IDGKR and a precision reference to build a portable multimeter or low-cost oscilloscope front end with sub-millivolt noise floor performance.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour S-13A1A10-U5T1U3 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | S-13A1B10-U5T1U3 | S-13A1A12-U5T1U3 | S-13A1A18-U5T1U3 | S-13A1A33-U5T1U3 | S-13A1H34-U5T1U3 |
|---|---|---|---|---|---|---|
| Package | SOT-89-5 | SOT-89-5 - same | SOT-89-5 - same | SOT-89-5 - same | SOT-89-5 - same | SOT-89-5 - same |
| Brand | ABLIC | ABLIC | ABLIC | ABLIC | ABLIC | ABLIC |
| Output Voltage | 1.0 V | 1.0 V | 1.2 V | 1.8 V | 3.3 V | 3.4 V |
| Maximum Output Current | 1 A | 1 A | 1 A | 1 A | 1 A | 1 A |
| Maximum Input Voltage | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Output Type | Fixed | Fixed | Fixed | Fixed | Fixed | Fixed |
| Output Accuracy | Plus or minus 1.5 percent | Plus or minus 1.5 percent | Plus or minus 1.5 percent | Plus or minus 1.5 percent | Plus or minus 1.5 percent | Plus or minus 1.5 percent |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| RoHS / Halogen-Free | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
| Approx. Unit Price (qty 1) | USD 0.95 | USD 0.95 | USD 0.95 | USD 0.95 | USD 0.95 | USD 0.95 |
Principaux différenciateurs
- Ultra-low quiescent current optimized for battery applications (vs S-13A1H34-U5T1U3)
- Highest output voltage precision within the A1 sub-family (vs S-13A1A33-U5T1U3)
- Single-cell Li-ion compatibility (vs Generic 3.3 V LDO)
Notes de conception
The SOT-89-5 package dissipates heat primarily through the central thermal tab. At 1 A load with a 5 V to 1 V step-down, the LDO dissipates approximately 4 W. With 100 mm squared of 1 oz copper on the tab tied to GND, junction temperature rise is roughly 50-60 C above ambient. For continuous 1 A operation in still air at 25 C ambient, use at least 200 mm squared of copper; reduce load to 0.5 A if only minimum copper area is available. The internal thermal shutdown engages above approximately 150 C junction.
Place the 1 uF X7R input and 1 uF X7R output ceramic capacitors within 2 mm of the VIN and VOUT pins to ensure stable regulation and minimize input-voltage ringing during load transients. Add a 0.1 uF HF bypass capacitor in parallel with each bulk cap for wideband noise rejection. Route the GND pin and thermal tab to a continuous ground plane; avoid cutting the plane under the tab to maximize heat spreading. Keep high-current traces wide and short to minimize IR drop, and place the regulator far from switching converters to avoid thermal coupling.
Do not exceed the absolute maximum input voltage of 6.5 V even briefly - add a TVS diode (5.6 V clamp) if the upstream source is unregulated or hot-pluggable. Do not parallel multiple S-13A1A10-U5T1U3 devices to achieve higher current; each part's internal foldback OCP will fight and create oscillation - use a single higher-rated LDO instead. Do not omit input/output capacitors; the datasheet ESR range must be respected for stability, and using only ceramic X7R within the stated value range ensures robust transient response.
Informations de conformité
Halogen-free and lead-free compliant per ABLIC product labeling (datasheet family S-13A1). AEC-Q100 not qualified - automotive designs should request the automotive-grade variant. REACH and conflict-minerals declarations are not explicitly stated in the verified data; set to 'unknown' rather than guessing.
