Datasheet

DR
AFT
DR
AFT
DRAFT
DR
D
RAFT
DRAFT
DRA
F
T DRAF
D
RAFT DRAFT DRAFT DRAFT DRAFT D
DRAFT
D
RAFT DRA
F
T DRAFT DRAFT DRAFT DRA
LPC3152_3154 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Preliminary data sheet Rev. 0.12 — 27 May 2010 59 of 88
NXP Semiconductors
LPC3152/3154
9.2.2 Li-ion charger
[1] Reversed current spec: For V
bat
= 3.2 V (no USB and 100 kΩ to ground).
Table 20: Static characteristics of the Li-ion charger
Symbol Parameter Conditions Min Typ Max Unit
V
bat
battery voltage cs_bits at 0000 - - 4.25 V
I
load
load current due to charger
when 5 V is
disconnected
[1]
-3-mA
constant-current charge (fast charge) mode
I
bat
battery current R
ext
= 1.00 kΩ 95 100 105 mA
R
ext
= 400Ω 237.5 250 262.5 mA
trickle charge mode
V
th(trch)bat
battery trickle charge threshold
voltage
battery voltage
rising
-2.8-V
battery voltage
falling
-2.7-V
constant-voltage charge mode
V
th(cvch)bat
battery constant-voltage charge
threshold voltage
After
compensation
using cs_bits
4.158 4.2 4.242 V
recharge mode
V
th(rech)bat
battery recharge threshold voltage - 4.05 - V