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General Description / p$ n$ W. s/ J: M. d% _
The ZCC6688 is a 3A Li-Ion battery charger. It utilizes " S0 t) r" O( ]! R1 x
a 500KHz synchronous buck converter topology to
* n. O' T+ j; z4 vreduce power dissipation during charging. Low power
+ j% w, ?5 d" H; {dissipation, an internal MOSFET allow a physically * c+ `9 g- ?. S% b
small charger that can be embedded in a wide range & Q9 c% l4 l; Q' W3 j( j
of handheld applications. The ZCC6688 includes
- E+ x2 V2 Y l2 h; x% N/ l m' {complete charge termination circuitry, automatic
3 i* g) t7 R2 a; ~5 D. U- Arecharge and a ±1% 4.2V /8.4V /12.6V /16.8V float
, @1 y; `# h1 M8 c' `, Rvoltage.
& P, k H; J. i6 G% g( ]Battery charge current, charge timeout and end-of- 4 N' a1 _, ^( a) F
charge indication parameters are set with external ' R* H4 a" i; B$ ?
components. Additional features include shorted cell
6 s9 f& B( ?& ]% cdetection; temperature qualified
: a" ~4 o; E- }charging and
8 g% w8 k8 Y9 _overvoltage protection. The ZCC6688 is available in a
8 F( I% a& A% s h6 Rlow profile ESSOP10 package. 5 z. R7 Z5 Z' y, M a* j
Features 0 m- ~2 @& u6 A! ?8 G. o* ]
Input voltage range 4V~22V * v0 a* R) m* m8 e" ~2 I: w
Dynamic input current allocation for maximum
, n9 _: j6 O8 S0 s- Fcharging rate
0 v- T, ]1 X' T. j* W, Z 3.0A Maximum Charge Current : A) k- u: |, v1 |6 r* G( }
No External MOSFETs and Blocking Diode
/ |% z/ C1 @) o" V7 r' n' Q zRequired 3 A9 w! B# ^% E/ i4 l
Efficiency up to 90% + c+ d7 g) P& G7 I
Constant-Current/Constant-Voltage Operation 8 Y6 i# z4 j- c. g2 y
with Thermal Regulation to Maximize Charge
( _+ `" Z) C+ ~: U- @! eRate Without Risk of Overheating
- ? {+ R i4 m9 O Optional Battery Temperature Monitoring Before # R& M/ X8 ?1 v$ j8 X$ D) p
and During Charge Automatic Sleep Mode for
- |1 s" d5 T- _Low-Power
9 a: z$ r1 \; \+ i) ~ Over Current Protection 7 F$ t5 H0 O8 r0 V D$ E
Consumption Available in ESSOP10
9 G u% |, E- u RoHS Compliant and 100% Lead (Pb)-Free
5 ?# h, o+ z$ l. w0 x* e
ZCC6688 V2.3.pdf
(1020.45 KB, 下载次数: 0)
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