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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 |
| 文件頁數(shù)： | 2/20頁 |
| 文件大?。?/td> | 372K |
| 代理商： | SAA1501T |
December 1994
2
Philips Semiconductors
Objective specification
Battery charge level indicator
SAA1501T
FEATURES
High level of integration to allow assembly in intelligent
battery packs
Accurate charge and discharge account
Large dynamic range of charge and discharge currents
Independent settings of charge and discharge efficiency
2 V minimum supply voltage (2 cell operation)
Temperature protection of batteries during charging
Temperature controlled self-discharge
Accurate charge current regulation
Two charge amount display modes, LCD and LED.
GENERAL DESCRIPTION
The SAA1501T is intended to be used as a battery monitor
and charge current control circuit in rechargeable battery
systems.
The SAA1501T is processed in BiCMOS technology
where the benefits of mixed bipolar and CMOS technology
is fully utilized to achieve high accuracy measurements
and digital signal processing in the same device. The
general function of the integrated circuit is a Coulomb
counter. During battery charging, the charge current and
charge time are registered in a Coulomb counter. During
discharge, the discharge current and time are recorded.
The momentary charge amount of the batteries can be
displayed either on an LCD screen or on an LED bargraph.
Using the SAA1501T, intelligent batteries or intelligent
battery powered systems can be easily designed with only
a few external components.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
CC
I
CC
supply voltage
supply current
2.0
3.0
1.2
4.3
1.7
V
mA
V
CC
= 3 V;
I
c
= I
d
= 60
μ
A
V
CC
= 3 V;
V
CSI
= V
DSI
= 0 V
C
osc
= 820 pF;
R
ref
= 51.5 k
I
CCstb
supply current in standby mode
100
μ
A
f
osc
fixed oscillator frequency
4.2
kHz
V
i(s)
T
amb
input sense voltage (pins 9 and 10)
operating ambient temperature
0
0
V
CC
1.6 V
+70
°
C
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
SAA1501T
SO24
plastic small outline package; 24 leads; body width 7.5 mm
SOT137-1
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