FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27800-2E
ASSP
For Power Management Applications (Mobile Phones)
Power Management IC
for Mobile Phon
e
MB3893A
s
DESCRIPTION
MB3893A is a multi-function power management IC chip with built-in 4-channel series regulator providing the
output control functions and power supply drop detection circuits required for mobile phones. The MB3893A
includes lithium-ion battery charge control functions and functions as a built-in power management system ideal
for mobile phone devices.
s
FEATURES
[Power Supply Control Unit]
• Supply voltage range
: V
CC
=
3.1 V to 4.8 V
• Low power consumption current during standby
: 110
µA
(Max.)
• Built-in 4-channel low-saturation voltage type series regulator
: 2.5 V/2 channels, 1.8 V/1 channels,
2.0 V/1 channels (1.9 V and 2.2 V available as mask options)
• Built-in interruption detection and supply recovery functions eliminate need for supplementary power supply
• Built-in On/Off switch circuit with accidental operation prevention function
• Accurate supply voltage drop detection
• Built-in power-on reset (OUT1) function
• Detection voltage with hysteresis
[Charge Control Unit]
• Supply voltage range
: VIN
=
3.4 V to 5.9 V
• Built-in lithium-ion battery charge control functions
• Charging voltage
: 4.1 V/4.2 V (switchable)
• Built-in preliminary charging function
• Built-in re-charging function
• Built-in timer functions
• Built-in battery temperature detection function
s
PACKAGES
48-pin plastic LQFP
48-pin plastic TQFP
(FPT-48P-M05)
(FPT-48P-M24)
MB3893A
s
PIN ASSIGNMENT
(TOP VIEW)
[Power Supply Control Unit]
32 : CHARGE
34 : VBDET1
33 : VBDET2
26 : CONT2
36 : ICONT
30 : OUT2
29 : OUT1
27 : OUT3
35 : XRST
28 : VCC1
31 : FULL
LEDG : 37
LEDR : 38
GND2 : 39
VCC : 40
INTV : 41
CVC : 42
BATSENSE : 43
COSC : 44
ROSC : 45
BATSEL : 46
VREFTH : 47
TSENSE : 48
25 : LED
24 : LEDEN
23 : SW1
22 : OUT4
21 : VCC2
20 : TEST
19 : VFIL
18 : POFF
17 : ONOFF2
16 : VCONT
15 : RC1
14 : CONT1
13 : CR2
DRST : 5
VREF1M : 10
XON : 11
CONT : 2
ISENSE+ : 3
ISENSE− : 4
CONT5 : 6
GND1 : 8
[Charge Control Unit]
(FPT-48P-M05)
(FPT-48P-M24)
2
ONOFF1 : 9
CR1 : 12
VIN : 1
C1 : 7
MB3893A
s
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Symbol
VIN
CONT
ISENSE+
ISENSE−
DRST
CONT5
C1
GND1
ONOFF1
VREF1M
XON
CR1
CR2
CONT1
RC1
VCONT
ONOFF2
POFF
VFIL
TEST
VCC2
OUT4
SW1
LEDEN
LED
CONT2
OUT3
VCC1
OUT1
OUT2
FULL
CHARGE
VBDET2
I/O
O
I
I
I
I
I
I
O
I
I
I
I
I
O
I
I
O
O
O
I
I
I
O
O
O
O
O
O
Description
Power supply pin for the charge control unit.
External P-ch MOS FET output control pin.
Charge current detection input pin.
Charge current/voltage detection input pin.
Power supply drop detection reset input pin. 100 kΩ pull-down.
Battery voltage measurement setting pin. 100 kΩ pull-down.
POR delay time setting capacitor connection pin.
Ground pin.
REG ON control pin. 100 kΩ pull-up: VCC (edge input)
Reference voltage output pin. (Power supply control unit)
REG On control pin. 100 kΩ pull-up: VCC (with delay)
Power supply drop detection judgement capacitor-resistor connection pin.
Cutoff detection judgement capacitor-resistor connection pin.
REG ON control pin. 100 kΩ pull-up: VCC
XON delay time setting capacitor-resistor connection pin.
470 kΩ pull-up: VCC (XON
=
L
O
)
REG rise signal output pin.
REG ON control pin. 100 kΩ pull-up: VCC (edge input)
REG OFF control pin. 100 kΩ pull-down (OFF)
REG reference pin.
Testing auxiliary pin. (normally GND connection)
REG4 power supply pin.
REG4 output pin.
Battery voltage measurement output pin.
LED input pin. 100 kΩ pull-down (LEDR : “L”
=
ON, “H”
=
OFF)
LED input pin. 100 kΩ pull-down (LEDG : “H”
=
ON, “L”
=
OFF)
REG3 On/Off control pin. 470 kΩ pull-up : OUT1
REG3 output pin.
REG1, 2, 3 supply pin.
REG1 output pin.
REG2 output pin.
Charge state detection signal output pin. (full charge)
Charge state detection signal output pin. (charging)
Power supply drop detection output signal pin.
(2.5 V Typ.)
(1.8 V Typ.)
(2.0 V Typ.)
(2.5 V Typ.)
(Continued)
3
MB3893A
(Continued)
Pin No.
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Symbol
VBDET1
XRST
ICONT
LEDG
LEDR
GND2
VCC
INTV
CVC
BATSENSE
COSC
ROSC
BATSEL
VREFTH
TSENSE
I/O
O
O
I
O
O
I
I
I
I
I
O
I
POR reset output pin.
Description
Power supply drop detection output signal pin. (10 s Typ.)
REG output mode switching pin. 100 kΩ pull-down
LED output pin. (open drain)
LED output pin. (open drain)
Ground pin.
Power supply pin for the power supply control unit
Internal power supply pin.
Phase compensation capacitor connection pin.
Battery connection verification input pin. 100 kΩ pull-up : VIN
Oscillator frequency setting capacitor connection pin.
100 pF + 19 pF (reference capacitance)
Oscillator frequency setting resistance connection pin.
Charge setting voltage switching pin.
100 kΩ pull-up : VIN (OPEN
=
4.1 V, “L”
=
4.2 V)
Temperature detection reference voltage pin
Temperature detection input pin.
4
MB3893A
s
BLOCK DIAGRAM
• Overall
VCC
40
RC1
XON
POFF
CONT1
ONOFF1
ONOFF2
DRST
Power supply control unit
15
11
18
14
9
17
5
36
ICONT
Time
constant
Power
supply
control
16
28
OUT
ON
REG1
POR
35
7
VCONT
VCC1
29
OUT1
XRST
C1
Power
supply
detector
CONT2
CR1
CR2
CONT5
VIN
INTV
ISENSE+
ISENSE−
CONT
CVC
ROSC
COSC
LEDR
LEDG
TSENSE
BATSENSE
BATSEL
CHARGE
FULL
LEDEN
LED
VREFTH
TEST
GND2
GND1
26
12
13
6
1
41
3
4
2
42
45
44
38
37
48
43
46
32
31
24
25
BGR
47
20
39
8
+
−
VCC
ON
REG2
OUT
30
OUT2
OUT
27
OUT3
Charge control unit
ON
REG3
21
OUT
ON
REG4
22
VCC2
OUT4
Charge
control
Initial power supply/
Power supply drop
detection circuit
34
33
VBDET1
VBDET2
23
SW1
19
10
VFIL
VREF1M
5
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