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AS2954BU5-3.3 PDF预览

AS2954BU5-3.3

更新时间： 2024-02-07 21:09:38
品牌 Logo 应用领域
其他 - ETC 模拟IC
页数 文件大小 规格书
6页 185K
描述
Analog IC

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AS2954BU5-3.3 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：TO-220, 5 PINReach Compliance Code：unknown
风险等级：5.75最大回动电压 1：0.6 V
JESD-30 代码：R-PSFM-T5湿度敏感等级：1
功能数量：1端子数量：5
工作温度TJ-Max：125 °C工作温度TJ-Min：-40 °C
最大输出电流 1：0.25 A最大输出电压 1：29 V
最小输出电压 1：1.24 V标称输出电压 1：3.3 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-220
封装形状：RECTANGULAR封装形式：FLANGE MOUNT
峰值回流温度（摄氏度）：225认证状态：Not Qualified
调节器类型：FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR表面贴装：NO
端子形式：THROUGH-HOLE端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

AS2954BU5-3.3 数据手册

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AS2954  
(Continued)  
Parameter  
Conditions  
Typical  
AS2954A  
AS2954  
Min Max  
AS2954B  
Min Max  
Units  
(Note 2)  
Min  
Max  
Applies for AS2954YT5-X, AS2954YU5-X and AS2954YS-X  
Error Comparator  
Output Leakage Current  
V
OH = 30V  
0.01  
150  
100  
2.00  
250  
400  
100  
100  
A
µ
2.00  
250  
400  
2.00  
250  
400  
Output Low Voltage  
VIN = 4.5V  
IOL = 400 A  
mV  
µ
Upper Threshold Voltage  
Lower Threshold Voltage  
Hysteresis  
(Note 8)  
(Note 8)  
(Note 8)  
240  
350  
60  
-320  
-380  
-450  
-640  
-150  
-100  
230  
-320  
-380  
-450  
-640  
-150  
-100  
230  
-320  
-150  
-100  
230  
mV  
mV  
mV  
-380  
-450  
-640  
160  
160  
160  
Shutdown Input  
VSD  
Output Turn-On  
Threshold Voltage  
1.155  
1.140  
1.305  
1.320  
1.155  
1.140  
1.305  
1.320  
1.155  
1.140  
1.305  
1.320  
V
mV  
Hysteresis(HYST)  
6
Input Bias Current(IB)  
VIN(SD) = 0V to 5V  
10  
-30  
-50  
-30  
-50  
-30  
-50  
-30  
-50  
-30  
-50  
-30  
-50  
nA  
Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total temperature range.  
Note 2: Unless otherwise specified all limits are guaranteed for TJ = 25°C, VIN = 6V, IL = 100 µA and CL = 1µF. Additional conditions for the 8-pin versions are  
feedback tied to 5V tap and output tied to output sense (VOUT = 5V) and VSHUTDOWN ≤ 0.8V.  
Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are  
covered under the specification for thermal regulation.  
Note 4: Line regulation for the AS2954 is tested at 150°C for IL = 1 mA. For IL = 100µA and TJ = 125°C, line regulation is guaranteed by design to 0.2%. See typical  
performance characteristics for line regulation versus temperature and load current.  
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential at  
very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken into account.  
Note 6: VREF ≤VOUT ≤ (VIN - 1V), 2.3 ≤VIN≤30V, 100µA≤IL≤ 250 mA, TJ ≤ TJMAX  
.
Note 7: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage measured at 6V input. To  
express these thresholds in terms of output voltage change, multiply by the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmed output  
voltage of 5V, the ERROR output is guaranteed to go low when the output drops by 95 mV x 5V/1.235 = 384 mV. Thresholds remain constant as a percent of VOUT as  
V
OUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.  
Note 8: VSHUTDOWN ≥ 2V, VIN ≤ 30V, VOUT =0, feedback pin tied to 5V Tap.  
Note 9: The junction -to-ambient thermal resistance of the TO-92 package is 180°C/ W with 0.4” leads and 160°C/ W with 0.25” leads to a PC board.  
The thermal resistance of the 8-Pin DIP package is 105°C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal resistance for the  
SOIC (S) package is 160°C/W.  
UNREGULATED DC  
VO  
5V @ 250mA  
1
7
8
MAX  
+
INPUT  
FEEDBACK  
OUTPUT  
2
SENSE  
Ω
180k  
..  
+
_
6
ERROR  
3
FROM  
CMOS OR  
TTL  
AMPLIFIER  
Ω
5V TAP  
330k ..  
SHUTDOWN  
+
Ω
60k ..  
5
µ
1
F..  
+
______  
ERROR  
+
_
60 mV  
ERROR  
TO CMOS OR  
TTL  
COMPARATOR  
+
1.23V  
4
REFERENCE  
GROUND  
AS2954 Block Diagram  
Rev.9/29/00  
123456

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