
SOLA-IC
SLM6300 is similar for 5V-input charger designs but not a wide-input SLM6305 match.
SLM6305 is a 2.5A wide-input synchronous Li-ion charger. Alternatives need pinout, input range, charge current, and thermal review.
input range or charge current may not match
outline matches for kept parts, pinout unknown
no digital interface shown
kept parts are indexed but need FAE review
No pin-compatible replacement is verified from the provided fields.
Review SLM6300 first only for 5V-input designs; use DS6521AFD33 only as a lower-current redesign option.
Pinout is unverified and several candidates change input range, current, or topology.

SOLA-IC
SLM6300 is similar for 5V-input charger designs but not a wide-input SLM6305 match.
| Feature / factor | SLM6305 | SLM6300 | DS6521AFD33 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Application | buck Li-ion charger | buck Li-ion charger | linear Li-ion charger | buck Li-ion charger / linear Li-ion charger — same function; DS6521AFD33: topology change | |
| Voltage | 4.6-26V input | 4.5-6V input | 4.5-24/30V | 4.5-6V input / 4.5-24/30V — 5V use only; DS6521AFD33: range close | |
| Current | 2.5A | 2.5A | 1A | 2.5A / 1A — charge current ok; DS6521AFD33: large derating | |
| Package | DFN3x3-10L | DFN3x3-10L | DFN3x3-10L | DFN3x3-10L — same outline; DS6521AFD33: same outline | |
| Pinout | 10 pins | 10 pins | 10 pins | 10 pins — pin map not checked; DS6521AFD33: pin map not checked |
SLM6300 is the closest listed charger, but only for low-input-voltage designs and after pinout review.