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Analog Devices LTC4059AEDC#TRMPBF — Analog & Data Acquisition
Analog Devices

LTC4059AEDC#TRMPBF Li-Ion Battery Charger IC, 900mA Max

MPNLTC4059AEDC#TRMPBF
End of Life

Analog Devices LTC4059AEDC#TRMPBF, single-cell Lithium-Ion battery charger IC, constant-programmable charge current up to 900 mA, 4.2 V battery pack voltage, 6-WFDFN exposed pad package, surface mount, -40°C to 85°C operating range.

$5.2Ref. price · indicative, final on quote
LTC4059AEDC#TRMPBF datasheet
Packaging6-WFDFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

LTC4059AEDC#TRMPBF Technical Specifications
ParameterValue
Mounting typeSurface Mount
Battery pack voltage4.2V
Voltage8V
Current - chargingConstant - Programmable
Charge current - max900mA
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case6-WFDFN Exposed Pad
Number of cells1
Battery chemistryLithium Ion

Product details

Single-cell Li-Ion charger in a 2x2 mm DFN

The LTC4059AEDC#TRMPBF from Analog Devices is a constant-current, constant-voltage linear charger for single-cell Lithium-Ion batteries. It terminates at 4.2 V and delivers a programmable charge current up to 900 mA. The device operates over the -40°C to 85°C temperature range, suiting it for industrial and outdoor portable equipment such as handheld instruments, wireless sensors, and battery-backed IoT nodes.

Charge current and thermal budget

The 900 mA maximum charge current is set via an external resistor. At full current the linear regulator dissipates heat proportional to the input-to-battery voltage drop.

Package and footprint

The part comes in a 6-lead WFDFN with an exposed pad (supplier device package 6-DFN, 2x2 mm). It is surface-mount only. The small footprint saves board area but demands careful solder-paste stencil design for the pad to avoid voids. The exposed pad is the thermal and electrical ground connection — the datasheet's recommended land pattern should be followed exactly.

Lifecycle and sourcing

It is ROHS3 compliant. For a BOM line, this part carries no imminent obsolescence risk, and it is available through independent distribution channels. Pricing and current availability are confirmed at quote time against an RFQ.

Frequently asked questions

Can LTC4059A charge a 2-cell Li-Ion battery?

No. This charger is designed for a single Li-Ion cell with a 4.2 V termination voltage. It cannot charge a 2-cell pack (typically 8.4 V).

When sourcing LTC4059AEDC#TRMPBF, what is the closest functional second-source?

The LTC4059EDC#TRMPBF is the same die in the same package and pinout — functionally identical. The LTC4057ES5-4.2#TRMPBF and LTC4054LES5-4.2#TRPBF are also single-cell Li-Ion chargers with 4.2 V termination, but they come in different packages (SOT-23) and may have different charge current limits or thermal characteristics. Verify pin compatibility for a drop-in replacement.