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SAA1501T Datasheet, PDF (14/20 Pages) NXP Semiconductors – Battery charge level indicator
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Philips Semiconductors
Battery charge level indicator
Objective specification
SAA1501T
SYMBOL
PARAMETER
CONDITIONS
MIN.
fosc
oscillator frequency
3.9
Temperature control (pins 11 and 12)
Vi
ITEMP2/ITEMP1
ITEMP2/ITEMP1
c
input voltage
detection at Tmax
detection at Tself
multiplication factor for
ITEMP1
d
multiplication factor for
ITEMP2
V11 = V12 = 300 mV
V11 = V12 = 300 mV
ITEMP1 = c × Iref
(where c is constant);
VTEMP1 = VTEMP2 = 300 mV
ITEMP2 = d × Iref
(where d is constant);
VTEMP1 = VTEMP2 = 300 mV
0
9.7
15
0.45
4.5
Open battery protection
VCC(ob)
open-battery level voltage
4.3
Testing
Vtest
test level voltage
1.0
Display decoder driver
IOL1
LOW level output current VOL = 0.6 V; L40 to L100 off; 7
(pin 20 LED),
VCC = 2.4 V
(LED 20 is on)
IOBP
output LED sense current VOBP = 0.1 V; L40 to L100 63
(pin 21 LED),
off; VCC = 2.4 V
(LED 20 is on)
ILED(CF)
LED current
IOL1/IOBP; VCC = 2.4 V
110
compensation factor
IOL2
LOW level output current all LEDs on; VOL = 0.7 V; 7.5
(pins 20 to 16 LED),
VCC = 2.8 V
(all LEDs are on)
IOBP(tot)
total output sense current VOBP = 0.1 V; VCC = 2.8 V; 350
(pins 21)
L20 to L100 on
ILED(CF)
LED current
5IOL2/IOBP(tot)
115
compensation factor
IOL
output current
VOL = 0.5 V; VCC = 2.8 V
350
(pins 20 to 16 LCD)
IOL(14,15)
LOW level output current VOL = 0.4 V; VCC = 2.4 V 0.9
(pins 14 and 15)
IOL(22,23)
LOW level output current VOL = 0.4 V; VCC = 2.1 V 7
(pins 22 and 23 LED)
IOL(21)
LOW level output current VOL = 0.4 V; VCC = 2.8 V 572
(pin 21 LCD)
IOH
HIGH level output current VOH = 2.4 V; VCC = 2.8 V 261
(pins 20 to 16 LED)
IOH(21)
HIGH level output current VOH = 2.4 V; VCC = 2.8 V 239
(pin 21 LED)
TYP.
4.3
MAX.
4.7
−
900
10.0
10.3
16
17
0.54
0.63
5.4
6.3
4.5
4.65
−
2.0
10
12
82
100
121
132
11
14
452
560
125
135
480
640
1.2
1.7
10
12
849
1214
378
526
378
565
UNIT
kHz
mV
V
V
mA
µA
mA
µA
µA
mA
mA
µA
µA
µA
December 1994
14
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