MB39A132QN-G-ERE1 Datasheet, PDF (3/56 Pages) Fujitsu Component Limited. – ASSP For Power Management Applications (Rechargeable Battery) Synchronous Rectification DC/DC Converter IC for Charging Li-ion Battery

MB39A132
■ PIN DESCRIPTIONS
Pin No. Pin Name I/O
Description
1
VCC
⎯ Power supply pin for reference power and control circuit (Battery side).
2
-INC1
I Current detection amplifier (Current Amp1) inverted input pin.
3
+INC1
I Current detection amplifier (Current Amp1) non-inverted input pin.
4
ACIN
I AC adapter voltage detection block (AC Comp.) input pin.
5
ACOK
O
AC adapter voltage detection block (AC Comp.) output pin.
ACOK = Lo-Z when ACIN = H, ACOK = Hi-Z when ACIN = L
6
-INE3
I Error amplifier (Error Amp3) inverted input pin.
7
ADJ1
I Error amplifier (Error Amp1) non-inverted input pin.
8
COMP1 O Error amplifier (Error Amp1) output pin.
9
-INE1
I Error amplifier (Error Amp1) inverted input pin.
10 OUTC1 O Current detection amplifier (Current Amp1) output pin.
11 OUTC2 O Current detection amplifier (Current Amp2) output pin.
12
+INC2
I Current detection amplifier (Current Amp2) non-inverted input pin.
13
-INC2
I Current detection amplifier (Current Amp2) inverted input pin.
14
ADJ2
Input pin for the charge current control block.
I ^{ADJ2 pin “GND to 4.4 V”}
:Charge current control block output =
ADJ2 pin voltage
ADJ2 pin “4.6 V to VREF” :Charge current control block output = 1.5 V
15 COMP2 O Error amplifier (Error Amp2) output pin.
16 COMP3 O Error amplifier (Error Amp3) output pin.
17
BATT
I Charge voltage control block battery voltage input pin.
18
ADJ3
Charge voltage control block setting input pin.
ADJ3 pin “GND”
:Charge voltage 4.00 V/Cell
I ADJ3 pin “1.1 V to 2.2 V” :Charge voltage 2 × ADJ3 pin voltage/Cell
ADJ3 pin “2.4 V to 3.9 V” :Charge voltage 4.35 V/Cell
ADJ3 pin “4.1 V to VREF” :Charge voltage 4.20 V/Cell
19
CS
⎯ Soft-start capacitor connection pin.
20
RT
⎯ Triangular wave oscillation frequency setting resistor connection pin.
21
VREF
O Reference voltage output pin.
22
GND
⎯ Ground pin.
23
CTL1
Power supply control pin.
I When the CTL1 pin is set to “H” level, the DC/DC converter becomes operable.
When the CTL1 pin is set to “L” level, the DC/DC converter becomes stand-by.
24
VIN
⎯ Power supply pin for ACOK function and Current Amp1(AC adapter side).
25
CELLS
I
Charge voltage setting switch pin (2/3/4-Cell).
CELLS = VREF: 4 Cells, CELLS = OPEN: 3 Cells, CELLS = GND: 2 Cells
26
PGND
⎯ Ground pin.
27
OUT2
O External low-side FET gate drive pin.
28
VB
O FET drive circuit power supply pin.
29
LX
⎯ External high-side FET source connection pin.
30
OUT1
O External high-side FET gate drive pin.
(Continued)
DS04–27265–3E
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