参数资料
型号: MAX15014BATX+T
厂商: Maxim Integrated
文件页数: 15/26页
文件大小: 0K
描述: IC REG DL BCK/LINEAR 36TQFNEP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
拓扑: 降压(降压)同步(1),线性(LDO)(1)
功能: 车载
输出数: 2
频率 - 开关: 135kHz
电压/电流 - 输出 1: 1.26 V ~ 32 V,1A
电压/电流 - 输出 2: 5 V ~ 40 V,50mA
带 LED 驱动器:
带监控器:
带序列发生器:
电源电压: 7.5 V ~ 40 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 36-WFQFN 裸露焊盘
供应商设备封装: 36-TQFN 裸露焊盘(6x6)
包装: 带卷 (TR)
1A, 4.5V to 40V Input Buck Converters with
50mA Auxiliary LDO Regulators
IN_SW
IN_LDO
7.0V OR 4.1V
EN_SYS
IN_LDO
MAX15014/MAX15017
V INT
V REFOK
V INTOK
UVLO_SW
-
4.1V
PASS ELEMENT
LDO_OUT
REG
REG_LDO
V REF
+
+
VINT
V REFOK
V INTOK
UVLO_LDO
V INT
V INTOK
PREREG
ENABLE LDO
+
-
V REF
MUX
SET_LOD
EN_SW
VREG_OK
-
UVLO_SW
TSD
SHDN
V REG_EN
SHDN
V INT
V INT
V REF
I SS
V INT
REF
V REF
V REFOK
V INT
THERMAL
SHDN
TSD
UVLO_LDO
TSD
SHDN
0.925 x V REF
-
+
V INT
2 μ A
V INT
OUT_LDO
-
+
DELAY COMPARATOR
185mV
RESET
VREG_ OK
EN
+
CT
DRAIN
SS
FB
+
E/A
-
+
SSA
-
V REF
ILIM
-
REF_ILIM
PFM
+
HIGH-SIDE
CURRENT
SENSE
OVERLOAD
-
REF_PFM
COMP
MANAGEMENT
CLK
BST
OVERL
IN S/W
-
LX
SYNC
EN
OSC
RAMP
-
0.3V
+
CPWM
+
PFM
LOGIC
SCLK
DVREG
SGND
CLK
PCLK
PGND
Figure 2. MAX15014/MAX15017 Simplified Block Diagram
Table 1. Enable Inputs Configuration
EN_SYS
Low
Low
High
High
EN_SW
Low
High
Low
High
LDO REGULATOR
Off
Off
On
On
DC-DC SWITCHING
CONVERTER
Off
Off
Off
On
The MAX15014–MAX15017 provide undervoltage lock-
out (UVLO). The UVLO monitors the input voltage
(V IN_LDO ) and is fixed at 4.1V (MAX15015/MAX15016)
or 7V (MAX15014/MAX15017).
Internal Linear Regulator (REG)
REG is the output terminal of a 5V (MAX15015/
MAX15016), or 8V (MAX15014/MAX15017) LDO which
is powered from IN_SW and provides power to the IC.
Connect REG externally to DVREG to provide power for
the high-side MOSFET gate driver. Bypass REG to
SGND with a ceramic capacitor (C REG ) of at least 1μF.
Place the capacitor physically close to the MAX15014–
MAX15017 to provide good bypassing. During normal
operation, REG is intended for powering up only the
internal circuitry and should not be used to supply
power to external loads.
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