參數(shù)資料
型號(hào): SAA1501T
廠商: NXP SEMICONDUCTORS
元件分類: 電源管理
英文描述: Battery charge level indicator
中文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO24
封裝: 7.50 MM, PLASTIC, SO-24
文件頁(yè)數(shù): 16/20頁(yè)
文件大?。?/td> 372K
代理商: SAA1501T
December 1994
16
Philips Semiconductors
Objective specification
Battery charge level indicator
SAA1501T
TIMING CHARACTERISTICS
Notes
1.
; where V
osc
= 440 mV and I
ref3
= 0.75.
2.
3.
4.
Applies to all converters and enable signal.
For charge current AC or DC: f >
1
2
f
osc
.
For discharge current AC: f >
1
4
f
osc
.
SYMBOL
PARAMETER
CONDITIONS
VALUE
T
osc
T
clk
t
som
t
som(p)
oscillator cycle time
clock cycle time
sense operation mode time
sense operation mode period
time
recognition time
note 1
T
osc
= 2C
osc
×
V
osc
/I
ref3
64t
osc
1.5
×
2
7
T
osc
2
12
T
osc
note 2
note 2
t
rec
power; note 3
load; note 4
T
battery
> T
self
(100 days at f
osc
= 4 kHz)
T
battery
> T
self
(200 days at f
osc
= 4 kHz)
>32t
osc
>20t
osc
2
35
T
osc
t
self
self discharge counter time
2
36
T
osc
t
battery(s)
battery temperature
measurement sense time
battery temperature
measurement period time
display test set-up time
interval display test time
period display test time
LED set-up time
LEDs-on time
2
7
T
osc
t
battery(p)
2
16
T
osc
t
su
t
id
t
pd
t
su:LED
t
LED(ON)
2
11
T
osc
< t < 1.5
×
2
18
T
osc
2
10
T
osc
1.5
×
2
18
T
osc
2
9
T
osc
2
15
T
osc
after change of mode
(except POCH mode)
f
BP
drive voltage frequency for back
plane
modulation frequency for auto
buzzer
2
4
T
osc
f
BUZ
1
2
T
osc
t
osc
2C
osc
V
ref3
I
×
=
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