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参数资料
| 型号： | MAX8566ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 10A 32TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 3.1 V |
| 输入电压： | 2.3 V ~ 3.6 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 250kHz ~ 4.2MHz |
| 电流 - 输出： | 10A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
High-Efficiency, 10A, PWM
Internal-Switch Step-Down Regulator
High-Side MOSFET Driver Supply (BST)
R1
REFIN
The gate-drive voltage for the high-side, n-channel
switch is generated by a flying-capacitor boost circuit.
The capacitor between BST and LX is charged from the
R2
C
MAX8566
V LSS supply while the low-side MOSFET is on. When
the low-side MOSFET is switched off, the stored voltage
of the capacitor is stacked above LX to provide the
necessary turn-on voltage for the high-side internal
MOSFET.
Frequency Select (FREQ)
Figure 2. Soft-Start Implementation with External Reference
Undervoltage Lockout (UVLO)
The UVLO circuitry inhibits switching when V DD is
The switching frequency is resistor programmable from
250kHz to 2.4MHz. Set the switching frequency of the
IC with a resistor from FREQ to GND (R FREQ ). R FREQ is
calculated as:
× ?
0 . 05 μ s ?
below 2V. Once V DD rises above 2V, UVLO clears and
the soft-start function activates. A 100mV hysteresis is
built in for glitch immunity.
R FREQ =
50 k ?
0 . 95 μ s
? 1
? f s
?
?
?
Monotonic Startup Modes (MODE)
When starting up into a precharged output, the MAX8566
does not discharge the output prior to entering soft-start
(known as monotonic startup). Drive MODE to 1/3 of V DD
to enable monotonic startup mode. Connect MODE to
GND to disable monotonic startup mode.
where f S is the desired switching frequency in Hz.
SYNC Function (SYNC, SYNCOUT)
The MAX8566 features a SYNC function that allows the
switching frequency to be synchronized to any frequen-
cy between 250kHz to 2.4MHz. Drive SYNC with a
C5
C24
OPEN
V IN
23
18
LSS
IN
BST
LX
4
5
0.047 μ F
L1
0.47 μ H
V OUT
1.8V AT 10A
2.3V TO 3.6V
C1
10 μ F
POWER-GOOD
OUTPUT
C2
10 μ F
R2
20k ?
R1
10 ?
C3
0.22 μ F
C4
1 μ F
19
20
21
22
24
3
27
IN
IN
IN
IN
V DD
PWRGD
EN
MAX8566
LX
LX
LX
LX
LX
LX
LX
PGND
PGND
PGND
PGND
PGND
6
7
8
9
10
11
12
17
16
15
14
13
2k ?
3300pF
C6
22 μ F
C7
22 μ F
R5
24.9k ?
R6
12.4k ?
R4
100 ?
C8
120pF
R17
20k ?
FB
32
R7
C9
R18
10k ?
R3
1
25
28
29
MODE
REFIN
SYNC
FREQ
GND
COMP
SYNCOUT
SS
2
30
26
16.9k ?
C11
330pF
C10
22pF
Figure 3. Typical Application Circuit
50k ?
31
0.022 μ F
14
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8566ETJ+ | 功能描述:电压模式 PWM 控制器 10A Step-Down Regulator RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX8566ETJ+T | 功能描述:电压模式 PWM 控制器 10A Step-Down Regulator RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX8566ETJ-T | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX8566EVKIT | 制造商:Maxim Integrated Products 功能描述:10A OUTPUT STEPDOWN REGULATOR WITH - Rail/Tube |
| MAX8566EVKIT+ | 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT FOR THE MAX8566 - Boxed Product (Development Kits) |
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