参数资料
型号: MAX15035ETL+T
厂商: Maxim Integrated Products
文件页数: 10/27页
文件大小: 0K
描述: IC REG BOOST SYNC 15A 40TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 升压(升压)
输出类型: 固定
输出数: 1
输出电压: 1.05V,1.5V
输入电压: 4.5 V ~ 26 V
PWM 型: 电流模式
电流 - 输出: 15A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 40-WFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 40-TQFN-EP(6x6)
15A Step-Down Regulator with Internal Switches
Typical Operating Characteristics (continued)
(MAX15035 Circuit of Figure 1, V IN = 12V, V DD = 5V, SKIP = GND, R TON = 200k Ω , T A = +25°C, unless otherwise noted.)
DYNAMIC OUTPUT-VOLTAGE TRANSITION
DYNAMIC OUTPUT-VOLTAGE TRANSITION
1.5V
1.05V
(PWM MODE)
MAX15035 toc28
A
1.5V
1.05V
(SKIP MODE)
MAX15035 toc29
A
1.5V
1.05V
B
1.5V
1.05V
B
0
C
10A
-6A
0
C
12V
0
A. REFIN, 500mV/div
B. V OUT , 200mV/div
I OUT = 2A
40 μ s/div
C. INDUCTOR CURRENT,
10A/div
D. LX, 10V/div
D
12V
0
A. REFIN, 500mV/div
B. V OUT , 200mV/div
I OUT = 2A
40 μ s/div
C. INDUCTOR CURRENT,
10A/div
D. LX, 10V/div
D
Pin Description
t SW = C TON ( R TON + 6 . 5 k Ω ) ?
PIN
1, 17, 27, 31,
39, 40
2
3, 28
4
5, 16
6–15
18–26
29
30
NAME
N.C.
EN
AGND
V DD
LX
PGND
IN
TON
BST
FUNCTION
No Connection. Not internally connected.
Shutdown Control Input. Connect to V DD for normal operation. Pull EN low to put the controller into its
2μA (max) shutdown state. The MAX15035 slowly ramps down the target/output voltage to ground
and after the target voltage reaches 0.1V, the controller forces LX into a high-impedance state and
enters the low-power shutdown state. Toggle EN to clear the fault-protection latch.
Analog Ground. Internally connected to EP1.
Supply Voltage Input for the DL Gate Driver. Connect to the system supply voltage (+4.5V to +5.5V).
Bypass V DD to power ground with a 1μF or greater ceramic capacitor.
Inductor Connection. Internally connected to EP2. Connect LX to the switched side of the inductor as
shown in Figure 1.
Power Ground
Power MOSFET Input Power Source. Internally connected to EP3.
Switching Frequency-Setting Input. An external resistor between the input power source and TON
sets the switching period (t SW = 1/f SW ) according to the following equation:
? V FB ?
? V OUT ? ?
where C TON = 16.26pF and V FB = V REFIN under normal operating conditions. If the TON current
drops below 10μA, the MAX15035 shuts down and enters a high-impedance state. TON is high
impedance in shutdown.
Boost Flying Capacitor Connection. Connect to an external 0.1μF capacitor as shown in Figure 1. The
MAX15035 contains an internal boost switch/diode (Figure 2).
10
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