- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372108 > SAA1504T (NXP SEMICONDUCTORS) Safety IC(安全保護芯片) PDF資料下載
參數(shù)資料
| 型號： | SAA1504T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | Safety IC(安全保護芯片) |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 3.90 MM, PLASTIC, MS-012, SOT-96-1, SOP-8 |
| 文件頁數(shù)： | 7/16頁 |
| 文件大小： | 80K |
| 代理商： | SAA1504T |
2000 Mar 07
7
Philips Semiconductors
Objective specification
Safety IC
SAA1504T
Disable mode
When the charge or discharge current exceeds the
specified maximum value, the disable mode is entered.
Detection of the maximum charge or discharge current is
only activated when the outputs are HIGH (CO = 1 and
DO = 1) as explained next.
If the safety IC is in the Power-down mode and a charge
current is detected (e.g. V
VM
=
0.6 V) the normal
operating mode will be entered when V
bat
> 2.6 V.
Because of a minimum time in which the gate capacitors
have to be charged, V
VM
=
0.6 V for a small period, when
the safety IC is already in the normal operating mode.
V
VM
=
0.6 V could also occur when the battery is charged
with a current exceeding the maximum charge current.
To prevent that a maximum charge current is detected
when coming from the Power-down mode a delay is
included to ensure charging of both outputs CO and DO.
So entering of the disable mode is enabled when both
outputs CO and DO are fully charged or after a certain
delay. The delay is necessary to activate the current
protection even in case the outputs CO or DO can not be
fully charged.
The same applies for entering the disable mode when the
safety IC is in the discharge enable mode.
The delay of the current protection as a function of the
sense voltage V
VM
(for charge and discharge) is given in
Fig.5.
The disable mode is also entered when the junction
temperature exceeds 100
°
C. When the temperature
dropsbelow60
°
Candattheabsenceofachargerorload,
the safety IC will return to its previous mode.
Status output
The status of the safety IC is available on pin ST.
Table 1
Functional table of the status output
Note
1.
Only when a charger is connected.
MODE
OUTPUT PIN ST
Normal operating
Charge inhibit
Discharge enable
Power-down
Disable
LOW
HIGH
LOW
LOW
HIGH (note 1)
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134); voltages measured with respect to pin V
SS
.
THERMAL CHARACTERISTICS
QUALITY SPECIFICATION
In accordance with “SNW-FQ-611-D”and JEDEC class III.
SYMBOL
PARAMETER
CONDITION
MIN.
0.3
MAX.
UNIT
V
CC
V
CC(clamp)
I
CC(clamp)
V
rev
positive battery sense input voltage
clamping voltage
clamping current
reverse charger voltage
DC constant
I
CC(clamp)
= 7 mA; t < 60 ms
+4.5
8.5
7
20
V
V
mA
V
V
rev
=
(V
CC
V
VM
);
V
VM
positive with respect to V
CC
V
VM
V
ST
T
amb
T
stg
negative sense input voltage
voltage on pin ST
ambient temperature
storage temperature
V
CC
20
V
VM
25
55
V
CC
+ 20 V
V
CC
+80
+150
V
°
C
°
C
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
R
th(j-a)
thermal resistance from junction to ambient
in free air
160
K/W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA1575HL | Global Positioning System (GPS)baseband processor(通用定位系統(tǒng)基帶處理器) |
| SAA2023GP | Drive processor for DCC systems |
| SAA2023 | Drive processor for DCC systems |
| SAA2023H | RES 4.53K OHM 1/16W 0.5% 0402SMD |
| SAA2500 | MPEG Audio Source Decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA-A1520 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CRYSTAL CLOCK OSCILLATORS |
| SA-A1521 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CRYSTAL CLOCK OSCILLATORS |
| SA-A1527 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CRYSTAL CLOCK OSCILLATORS |
| SA-A1529 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CRYSTAL CLOCK OSCILLATORS |
| SA-A152A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CRYSTAL CLOCK OSCILLATORS |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。