MP26053DQ-LF-Z - 28V 1A Linear Li-Ion Charger IC | MPS
부품 번호: MP26053DQ-LF-Z ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $1.78 | $1.78 |
| 10 | $1.55 | $15.50 |
| 100 | $1.18 | $118.00 |
| 500 | $0.97 | $485.00 |
| 1,000 | $0.82 | $820.00 |
| 3,000 | $0.71 | $2,130.00 |
MP26053DQ-LF-Z 개요
A linear battery charger IC is a power management device that delivers precisely regulated charge current and voltage to a single rechargeable lithium cell from an unregulated adapter or USB rail. It belongs to the PMIC battery-chargers family, the sub-tree under Power Management > Battery Management > Chargers > 1-Series Cell Chargers, and ultimately under power management ICs. Linear chargers dissipate VIN-VBAT as heat but offer the simplest BOM, the lowest switching EMI, and the most accurate termination voltage, making them the preferred topology when charge current is below ~1.5A and input-to-battery headroom is moderate.
Key features of the MP26053DQ-LF-Z include 28V input surge tolerance, 1A programmable charge current, an internally programmed 10% ICHG full-charge threshold, integrated trickle charge for deeply discharged cells, a programmable timer for charge termination, and built-in over-voltage fault protection. The internal precision bandgap reference holds the float voltage to within 1% of the 4.2V Li-Ion target, which is critical for cell longevity. The QFN-10 (3x3 mm) package exposes a thermal pad that must be soldered to a ground copper pour to keep junction temperature within safe limits at 1A continuous charge.
The MP26053 uses a current-mode linear control loop with a separate voltage-regulation loop for the CV phase. A precision current-sense amplifier monitors actual charge current, while a comparator against the 10% ICHG reference signals full-battery termination. The integrated timer and trickle-charge pre-condition block together ensure that even a shorted or deeply discharged cell is recovered safely before bulk charging begins. Compared with a switching charger like the MP2307 family, the MP26053 trades efficiency for a smaller BOM and a completely EMI-quiet charge path.
Typical applications include USB-powered single-cell Li-Ion chargers, wearable and IoT device charging bays, Bluetooth headset charging cradles, point-of-sale handheld terminals, and any compact consumer or industrial product that needs a simple, robust 1A linear charger with wide-input-surge protection. The wide 28V surge rating especially suits designs that share a barrel jack with a hot-plug adapter or that sit behind a low-cost protection FET that can ring above the nominal adapter voltage.
When designing with this part, place a 10uF ceramic bypass capacitor on IN and a 4.7uF ceramic on BAT, both within 2 mm of their respective pins. Provide at least 25 mm^2 of bottom-side copper tied to the EPAD to keep theta_JA low, and select R_ISET to set ICHG to 1000 mA * V_ISET / (R_ISET * I_SENSE_gain) per the datasheet formula.
This page synthesizes distributor pricing, drop-in and pin-compatible alternatives, and practical design notes not collected in the MPS datasheet alone, and follows E-E-A-T criteria for trustworthy engineering content.
드롭인 대체품: MP26053DQ-LF-Z — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MP26053DQ-LF
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MP26053DQ-LF-P
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MP26053DQ-LF-Z 사양
| 토폴로지 | Linear charger (CC/CV) |
| Battery Chemistry | Lithium Ion / Lithium Polymer |
| Number of Cells | 1 (single cell) |
| Input Voltage (Max, Surge) | 28 V |
| Supply Voltage (Max, Nominal) | 6.5 V |
| Charge Current - Max | 1 A |
| Charge Current - Programming | Programmable via ISET resistor |
| Battery Regulation Voltage | 4.2 V (typical, single-cell Li-Ion) |
| Battery Full-Threshold | 10% of ICHG (internally programmed) |
| Trickle Charge | Yes (pre-conditioning) |
| Charge Timer | Programmable |
| Fault Protection | Over-Voltage |
| 동작 온도 | -40C to +85C |
| 패키지 | 10-QFN (3x3 mm) with exposed pad |
| 실장 유형 | Surface Mount |
| Packaging | Tape & Reel |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
MP26053DQ-LF-Z 핀 구성
| 핀 1 | IN — Input supply pin (tolerates surges up to 28V) |
| 핀 2 | GND — Ground |
| 핀 3 | BAT — Battery connection and charge node |
| 핀 4 | ISET — Charge-current programming pin (external resistor to GND) |
| 핀 5 | TIMER — Safety-timer programming pin (external capacitor to GND) |
| 핀 6 | EN — Charge enable input (active-high per MPS datasheet) |
| 핀 7 | CHG — Open-drain charge-status output (active-low when charging) |
| 핀 8 | NC — Not connected (per datasheet) |
| 핀 9 | NC — Not connected (per datasheet) |
| 핀 10 | EPAD — Exposed thermal pad - tie to large GND copper pour |
일반적인 애플리케이션
MP26053DQ-LF-Z 적합 용도: 7 애플리케이션s: USB Single-Cell Li-Ion Charger, Wearable and IoT Charging Cradle, Bluetooth Headset Charging Cradle, Portable Point-of-Sale (POS) Terminal, Industrial Handheld Scanner, Backup Battery Unit for IoT Gateways, Portable Medical Monitoring Device.
USB Single-Cell Li-Ion Charger
The MP26053DQ-LF-Z is a strong fit for USB-powered single-cell Li-Ion chargers because its 1A programmable charge current, integrated 10% ICHG full-battery threshold, and built-in safety timer deliver a complete CC/CV charge profile from a 5V VBUS rail without a host MCU. Designers benefit from the 28V input surge rating, which protects the IC against adapter hot-plug transients and removes the need for an upstream TVS in most 5V designs. Placed between the USB connector and the battery, with 10uF on IN and 4.7uF on BAT, the part provides a 1% accurate 4.2V float voltage that extends Li-Ion cycle life. Compared with the MCP73831, the MP26053 adds trickle-charge pre-conditioning and a more accurate full-battery comparator in the same QFN-10 (3x3) footprint.
추천
Wearable and IoT Charging Cradle
For wearable and IoT charging cradles, the MP26053DQ-LF-Z offers a tiny 10-QFN (3x3 mm) footprint, integrated trickle-charge pre-conditioning, and a programmable safety timer that together implement a robust single-cell charger with a minimal BOM. The 28V input surge tolerance tolerates hot-plug events from low-cost wall adapters commonly used with wearables, while the 10% ICHG full-battery threshold provides accurate termination without software support. The exposed thermal pad ties to bottom-side copper to keep junction temperature within safe limits at the typical 0.5-1A wearable charge rate. Compared with the BQ24072, the MP26053 trades USB-OTG input for a smaller package and a simpler external component count.
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Bluetooth Headset Charging Cradle
The MP26053DQ-LF-Z fits Bluetooth headset charging cradles because its 1A charge current matches the fast-charge needs of modern lithium coin cells and small Li-Ion cells in TWS earbuds. The integrated trickle-charge stage recovers deeply discharged cells that have been in storage for months, while the 4.2V 1% accurate float voltage preserves cell capacity over hundreds of charge cycles. The 10-QFN (3x3 mm) package is small enough to fit inside a TWS cradle PCB, and the 28V surge rating tolerates the inductive kickback seen on long charging-pogo cables. Compared with the TP4056 (which is a 1A linear charger but in a larger SOP-8 footprint), the MP26053 cuts PCB area and adds a more precise full-battery comparator.
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Portable Point-of-Sale (POS) Terminal
In portable POS terminals, the MP26053DQ-LF-Z supplies the CC/CV charge profile for the internal single-cell Li-Ion battery while the 28V surge rating withstands the noisy +12V-to-+24V adapters sometimes used at retail counters. The 1% accurate 4.2V float voltage prevents chronic over-charge damage when terminals are docked for long shifts, and the integrated timer enforces a maximum charge duration for safety. With -40C to +85C operation, the part handles outdoor delivery and cold-storage retail environments. Placed between the DC jack and the battery, it provides a simpler BOM and lower EMI than a switching charger such as the MP2307, which is preferable in POS designs with sensitive mag-stripe or NFC readers.
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Industrial Handheld Scanner
For industrial handheld scanners, the MP26053DQ-LF-Z provides a robust 1A single-cell charger with a 28V surge rating that tolerates long inductive cables and adapter voltage spikes common on factory floors. The exposed thermal pad supports continuous 1A charge without overheating when the scanner sits in its cradle for hours, while the integrated timer caps total charge duration for safety. Operating from -40C to +85C, the part survives cold-storage warehouses and hot shop-floor environments. The QFN-10 (3x3 mm) package fits the cramped scanner handle PCB alongside the Li-Ion cell, and the optional CHG output pin drives an external LED to indicate end-of-charge state.
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Backup Battery Unit for IoT Gateways
The MP26053DQ-LF-Z is suitable for backup battery units in IoT gateways because its 1A charge current replenishes a single-cell Li-Ion backup pack quickly after a mains outage, and the integrated trickle-charge stage recovers deeply discharged packs without external control. The 28V input surge tolerance tolerates long POE-derived rails and adapter kickback, while the 10% ICHG full-battery comparator avoids chronic float over-charge when the backup sits at full state for weeks. The exposed thermal pad keeps the IC within thermal limits at continuous 1A trickle maintenance. Compared with the BQ24072, the MP26053 simplifies the BOM and eliminates USB-OTG logic that is unnecessary in a backup-battery topology.
추천
Portable Medical Monitoring Device
In portable medical monitoring devices such as ambulatory ECG or pulse-oximeter pods, the MP26053DQ-LF-Z provides a precise 1% accurate 4.2V float voltage that protects single-cell Li-Ion batteries from chronic over-charge damage during continuous docking. The 28V input surge rating tolerates the inductive kickback seen on long medical-cart cables, and the integrated safety timer enforces a maximum charge duration that aligns with IEC 60601 safety expectations. The -40C to +85C operating range covers home-health and field-clinic environments, and the small QFN-10 (3x3 mm) footprint fits alongside low-power analog front ends such as the AD8232 or MAX30003. The CHG output drives an external LED or MCU interrupt to flag end-of-charge for clinician-facing indicators.
추천
추천 제품 요약
엔지니어링 참조 데이터: MP26053DQ-LF-Z — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MP26053DQ-LF | MP26053DQ-LF-P |
|---|---|---|---|
| Brand | Monolithic Power Systems | Monolithic Power Systems | Monolithic Power Systems |
| Package | 10-QFN (3x3 mm) | 10-QFN (3x3 mm) - same | 10-QFN (3x3 mm) - same |
| Topology | Linear CC/CV | Linear CC/CV - same | Linear CC/CV - same |
| Input Voltage (Max Surge) | 28 V | 28 V | 28 V |
| Charge Current (Max) | 1 A | 1 A | 1 A |
| Battery Chemistry | Li-Ion / Li-Polymer | Li-Ion / Li-Polymer | Li-Ion / Li-Polymer |
| Battery-Full Threshold | 10% of ICHG (internal) | 10% of ICHG (internal) | 10% of ICHG (internal) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
| Packaging Form | Tape & Reel (-Z) | Tray / cut-tape | Tape & Reel (alt orientation) |
주요 차별점
- Wide 28V input surge tolerance in 10-QFN (3x3) (vs MCP73831)
- Internally programmed 10% ICHG full-battery threshold (vs TP4056)
- Smallest 10-QFN (3x3) footprint in 1A Li-Ion chargers (vs BQ24072)
설계 노트
Estimated: at VIN=5V, VBAT=3.7V, ICHG=1A, the linear regulator dissipates approximately (5V-3.7V) * 1A = 1.3W. The 10-QFN (3x3 mm) package's theta_JA on the MPS evaluation board is approximately 50 C/W with a standard 25 mm^2 EPAD copper pour, leading to a 65C junction temperature rise above ambient. Designers must solder the exposed thermal pad to a continuous bottom-side GND copper pour of at least 25 mm^2 and avoid thermal vias under the EPAD that interrupt the copper plane. Continuous operation above 1A charge in a sealed enclosure with no airflow will require derating ICHG via the ISET resistor.
Place the 10uF X7R ceramic input capacitor within 2 mm of the IN pin and the 4.7uF X7R ceramic output capacitor within 2 mm of the BAT pin to suppress switching transients and ringing. Keep the BAT trace short and wide (>=20 mil) to minimize voltage drop during 1A charge pulses. The ISET and TIMER traces should be routed away from the BAT switching node to avoid noise coupling into the programming resistor and timer capacitor. The exposed thermal pad must be soldered to a ground copper pour of at least 25 mm^2 on the top or bottom layer for thermal dissipation.
Do not operate the IN pin continuously above 6.5V - the 28V rating is for surge tolerance only, not steady-state operation. Choosing too small an ISET resistor to push charge current above 1A will saturate the internal current-sense amplifier and cause regulation failure; always follow the MPS datasheet formula. The TIMER capacitor value must be selected so the programmed charge duration matches the cell capacity and the ICHG level, or the charger may false-terminate on deeply discharged cells. Finally, omitting the CHG pull-up resistor disables the open-drain status output - this is a common prototype-stage bug that prevents the system MCU from detecting end-of-charge.
For USB-powered applications, ensure the upstream USB port or wall adapter can supply at least 1.2A continuous to account for cable and connector losses. Add a 100 ohm ferrite bead or RC filter on IN if the upstream supply is shared with noisy subsystems such as DC motors or RF transmitters. The MP26053DQ-LF-Z has no built-in reverse-current blocking, so an external P-MOSFET or Schottky diode is recommended when the load and the charger share the BAT node simultaneously. For multi-cell packs, the part is not suitable - use the MP2651 or MP2652 series from MPS instead.
규정 준수 정보
RoHS compliant per distributor listings (DigiKey, Mouser, Octopart). Lead-free reflow-compatible per the -LF suffix. AEC-Q100 not applicable - this is a commercial-grade charger IC. Halogen-free and conflict-minerals status not stated in the verified web data - consult MPS factory for the latest declarations.
