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参数资料
| 型号： | MIC29371-5.0BU TR |
| 厂商： | Micrel Inc |
| 文件页数： | 5/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V .75A TO-263-5 |
| 标准包装： | 750 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V |
| 输入电压： | 最高 26V |
| 电压 - 压降（标准）： | 0.37V @ 750mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 750mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-263-6，D²Pak（5 引线+接片），TO-263BA |
| 供应商设备封装： | TO-263-5 |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC29371-5.0BUTR MIC29371-5.0BUTR-ND |
MIC2937A/29371/29372
Micrel, Inc.
Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical speci?cations do not
apply when operating the device outside of its rated operating conditions. The maximum allowable power dissipation is a function of the
maximum junction temperature, T J (MAX) , the junction-to-ambient thermal resistance, θ JA , and the ambient temperature, T A . The maximum
allowable power dissipation at any ambient temperature is calculated using: P (MAX) = (T J(MAX) – T A ) / θ JA. Exceeding the maximum allowable
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
Note 2: Output voltage temperature coef?cient is de?ned as the worst case voltage change divided by the total temperature range.
Note 3: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to
heating effects are covered by the thermal regulation speci?cation.
Note 4: Dropout Voltage is de?ned as the input to output differential at which the output voltage drops 100 mV below its nominal value
measured at 1V differential. At low values of programmed output voltage, the minimum input supply voltage of 4.3V over temperature must
be taken into account. The MIC2937A operates down to 2V of input at reduced output current at 25°C.
Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current
plus the ground pin current.
Note 6: The MIC2937A family features fold-back current limiting. The short circuit (V OUT = 0V) current limit is less than the maximum
current with normal output voltage.
Note 7: Thermal regulation is de?ned as the change in output voltage at a time T after a change in power dissipation is applied, exclud-
ing load or line regulation effects. Speci?cations are for a 200mA load pulse at V IN = 20V (a 4W pulse) for T = 10ms.
Note 8: V REF ≤ V OUT ≤ (V IN – 1 V), 4.3V ≤ V IN ≤ 26V, 5mA < I L ≤ 750 mA, T J ≤ T J MAX.
Note 9: Comparator thresholds are expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage
measured at 6V input (for a 5V regulator). To express these thresholds in terms of output voltage change, multiply by the error ampli?er
gain = V OUT /V REF = (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 V = 384 mV. Thresholds remain constant as a percent of V OUT as V OUT is varied, with the dropout
warning occurring at typically 5% below nominal, 7.7% guaranteed.
Note 10: Circuit of Figure 3 with R1 ≥ 150kΩ. V SHUTDOWN ≥ 2V and V IN ≤ 26V,V OUT = 0.
Note 11: When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode
clamped to ground.
Note 12: Maximum positive supply voltage of 60V must be of limited duration (< 100ms) and duty cycle ( ≤ 1%). The maximum continu-
ous supply voltage is 26V.
Schematic Diagram
IN
FEEDBACK
Q15A
Q9
Q15B
Q25
R18
20 k ?
Q26
Q24
OUT
Q6
Q3
Q1
10
R11
18
k?
C1
20
pF
Q4
Q5
Q2
R11
20.6
k?
Q7
Q8
Q16
Q17
Q14
R17
12 k ?
R27
R28
SENSE
V TAP
Q42
Q40
R30
30
k?
R1
20 k ?
R2
50 k ?
Q41
R5
180
k?
R3
50 k ?
R6
140
k?
Q13
R4
13 k?
Q12
R8
31.4 k ?
R9
27.8 k ?
R10
150
k?
Q11
Q20
R12
110
k?
R13
100
k?
Q18
C2
40 pF
R14
350
k?
Q19
Q21
Q29
Q22
R15
100 k ?
R16
30 k ?
Q28
R17
10 ?
Q23
R21 8 ?
50 k ?
10 k ?
ERROR
Q37
Q36
R22
150 k ?
Q30
Q31
R24
50 k ?
R23 60 k ?
SHDN
Q38
Q34
May 2006
Q39
R26
60 k?
R25
2.8 k ?
5
GND
DENOTES CONNECTION ON
MIC2937A-xx AND MIC29371-xx
VERSIONS ONLY
MIC2937A/29371/29372
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC29372BT | 功能描述:IC REG LDO ADJ .75A TO220-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC29372BU | 功能描述:IC REG LDO ADJ .75A TO263-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC29372BU TR | 功能描述:IC REG LDO ADJ .75A TO263-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.8V 输入电压:最高 16V 电压 - 压降（标准）:0.3V @ 80mA 稳压器数量:1 电流 - 输出:80mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:带卷 (TR) 其它名称:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC29372BUTR | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC29372WT | 功能描述:低压差稳压器 - LDO 750mA LDO Adj + Shutdown(ROHS Compliant) RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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