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参数资料
| 型号： | MAX8704EUB+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/13页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 1.5V/1.2V/ADJ 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 1.5V，1.2V，可调式 |
| 输入电压： | 1 V ~ 5.5 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 5A |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 带卷 (TR) |
High-Current, Low-Voltage Linear Regulator
with Power-Limited, External MOSFET
load current. Bypass V CC with a 1μF or greater ceramic
capacitor as close to the MAX8704 as possible.
INPUT
1.8V TO 5.5V
N1
IRF7401
R SENSE
10m ?
OUTPUT (V OUT )
1.5V AT 5A (MAX)
Undervoltage Lockout (UVLO)
The V CC input undervoltage-lockout (UVLO) circuitry
ensures that the regulator starts up with a gate-drive
voltage that can adequately bias the external n-channel
C IN1
100 μ F
C IN2
10 μ F
DRV
C OUT
2 x 22 μ F
MOSFET. The UVLO threshold is 4.2V (typ), and V CC
must remain above this level for proper operation.
Power-Supply Input (V IN )
The power input supply (V IN ) sources the current
required by the linear regulator’s output (V OUT ). V IN
connects to the drain of the external n-channel power
5V BIAS
SUPPLY
C1
1.0 μ F
R3
100k ?
V IN
V CC
MAX8704
CSP
CSN
FB
R1
20k ?
R2
10k ?
MOSFET. V IN may be as low as 1.0V, minimizing the
power dissipation across the n-channel MOSFET.
Bypass V IN with a 10μF or greater capacitor as close to
the external MOSFET as possible. To avoid input volt-
POWER-
GOOD
PGOOD
SS/EN
GND
PLIM
age sag during a load transient, the input supply
should provide a low source impedance. If a high-
impedance source is used, additional input bulk
ON
OFF
C SS
0.01 μ F
R PLIM
200k ?
C PLIM
0.1 μ F
capacitance is required near the MAX8704.
Soft-Start and Enable (SS/EN)
As shown in Figure 2, a capacitor on SS/EN allows a
gradual buildup of the MAX8704 current limit, reducing
the initial inrush current peaks at startup. The input sup-
ply UVLO and thermal-overload fault trigger the internal
SS/EN pulldown resistor (R SS/EN = 1k ? ), automatically
forcing the MAX8704 into shutdown. When properly
Figure 1. Standard Application Circuit
powered (V CC above UVLO), the MAX8704 charges the
soft-start capacitor with a constant 5μA current source
(see the Soft-Start Capacitor Selection section). Once
the SS/EN voltage rises above 0.5V, the linear regulator
Table 1. MOSFET Selection (>1.5V Output-Voltage Applications)
MOSFET
R DS(ON) (m ? )
2.5V 1.8V
V DS
(V)
C ISS *
(nF)
PACKAGE
VENDOR
FDS6574A
Si4836DY
7
4
9
5
20
12
8
7
SO-8 (2.5W)
SO-8 (2.5W)
Fairchild
Siliconix (Vishay)
* C ISS when V DS = 1V
Table 2. MOSFET Selection (0.5V to 1.5V Output-Voltage Applications)
MOSFET
R DS(ON) (m ? )
4.5V 2.5V
V DS
(V)
C ISS *
(nF)
PACKAGE
VENDOR
IRF7401
NDS8425
FDS6572A
FDS7064N
Si9426DY
Si4866DY
Si7882DP
22
22
6
7.5
13.5
5.5
30
28
8
—
16
8
20
20
20
30
20
12
2.7
1.4
6.2
3.7
3.5
3.2
SO-8 (2.5W)
SO-8 (2.5W)
SO-8 (2.5W)
Bottomless SO-8 (3W)
SO-8 (2.5W)
SO-8 (2.5W)
PowerPAK (5W)
International Rectifier
Fairchild
Fairchild
Fairchild
Siliconix (Vishay)
Siliconix (Vishay)
* C ISS when V DS = 1V
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8704EVKIT | 功能描述:低压差稳压器 - LDO Evaluation Kit for the MAX8704 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 |
| MAX8705ETL | 制造商:Maxim Integrated Products 功能描述:IMVP-5 CPU CORE SUPPLY - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX8705ETL+ | 制造商:Maxim Integrated Products 功能描述:IMVP-5 CPU CORE SUPPLY - Rail/Tube |
| MAX8705ETL+T | 制造商:Maxim Integrated Products 功能描述:IMVP-5 CPU CORE SUPPLY - Tape and Reel |
| MAX8705ETL-T | 制造商:Maxim Integrated Products 功能描述:IMVP-5 CPU CORE SUPPLY - Tape and Reel |
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