集成ic（保护ic+mos管）

■ features
1. the protection ic and the dual-nch mosfet to use common drain are integrated into
one-packaging ic.
2. reduced pin-count by fully connecting internally.
3. application part
1) protection ic
① uses high withstand voltage cmos process.
- the charger section can be connected up to absolute maximum rating 24v.
② detection voltage precision
- overcharge detection voltage
±60? (ta=25℃)
- overdischarge detection voltage
±110? (ta=25℃)
- discharging overcurrent detection voltage
±35? (ta=25℃)
③ built-in detection delay times
- overcharge detection delay time
typ 0.08s / max 0.20s (ta=25℃)
- overdischarge detection delay time)
typ 40? / max 100? (ta=25℃)
- discharging overcurrent detection delay time)
typ 10? / max 30? (ta=25℃)
- short detection delay time)
typ 5? / max 50? (ta=25℃)
④ with abnormal charger detection function
⑤ 0v charge function is allowed
⑥ auto wake-up function is not allowed
2) fet
① using advanced trench technology to provide excellent rds(on), low gate charge and
operation with gate voltage as low as 2.5v while retaining a 12v vgs(max).
② common drain configuration
③ general characteristics
- vds (v) = 20v
- id (a) = 6a
- rss(on) < 60mω (vgs = 4.5v, id = 5a)

■ outline
  this is a battery protect solution ic which is integrated with built-in the protection ic to use
a lithium ion/lithium polymer secondary batteries developed for 1-cell series and dual-nch
mosfet. it functions to protect the battery by detecting overcharge, overdischarge, discharge
overcurrent and other abnormalities as turning off internal nch mosfet.
  the protection ic is composed of three voltage detectors, short detection circuit, reference
voltage sources, oscillator, counter circuit and logical circuits.
  the cout pin (charge fet control pin) and dout pin (discharge fet control pin) outputs are
cmos output, and can drive the internal nch mosfet directly. the cout output becomes low
level after delay time fixed in the ic if overcharge is detected. the dout output becomes low
level after delay time fixed in the ic if overdischarge, discharge overcurrent or short is detected.
on overcharge state, if the vdd voltage is less than the overcharge release voltage, the
cout output becomes high level after delay time fixed in the ic. on overdischarge state, if the
voltage of the battery rises more than the overdischarge detection voltage with connecting the
charger, the dout output becomes high level after delay time fixed in the ic. charging current
can be supplied to the battery discharged up to 0v.
  once discharge overcurrent or short have been detected, if the state of discharge overcurrent
or short is released by opening the loads, the dout output becomes high level after delay time
fixed in the ic. on overdischarge state, the supply current is reduced as less as possible.