參數(shù)資料
型號: SC424MLTRT
廠商: Semtech
文件頁數(shù): 4/29頁
文件大?。?/td> 496K
描述: IC REG DL BUCK/LINEAR 28MLPQ
標準包裝: 1
系列: SmartDrive™
拓撲: 降壓(降壓)(1),線性(LDO)(1)
功能: 任何功能
輸出數(shù): 2
頻率 - 開關: 200kHz ~ 1MHz
電壓/電流 - 輸出 1: 可調(diào)至 0.75V,6A
電壓/電流 - 輸出 2: 5V,150mA
帶 LED 驅動器:
帶監(jiān)控器:
帶序列發(fā)生器:
電源電壓: 3 V ~ 28 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-VFQFN 裸露焊盤
供應商設備封裝: 28-MLPQ(4x4)
包裝: 標準包裝
其它名稱: SC424MLDKR
SC414/SC424
4
Absolute Maximum Ratings
LX to PGND (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +30
LX to PGND (V) (transient  100ns max.) . . . . . . -2 to +30
VIN to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +30
EN/PSV, PGOOD, ILIM, to GND (V) . . . . . . -0.3 to +(V5V + 0.3)
VOUT, VLDO, FB, to GND (V) . . . . . . . . . . . -0.3 to +(V5V + 0.3)
V5V to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6
TON to PGND (V) . . . . . . . . . . . . . . . . . . . . . -0.3 to +(V5V - 1.5)
ENL (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to V
IN
BST to LX (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0
BST to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +35
AGND to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +0.3
ESD Protection Level
(1)
(kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Recommended Operating Conditions
Input Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 to 28
V5V to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 to 5.5
VOUT to PGND (V) . . . . . . . . . . . . . . . . . . . . . . . . . .0.75 to 5.5
Thermal Information
Storage Temperature (癈) . . . . . . . . . . . . . . . . . . . . -60 to +150
Maximum Junction Temperature (癈) . . . . . . . . . . . . . . . .150
Operating Junction Temperature (癈) . . . . . . . .-40 to +125
Thermal resistance, junction to ambient
(2)
 (癈/W)
High-side MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Low-side MOSFET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
PWM controller and LDO thermal resistance . . . . . 40
Peak IR Refl ow Temperature (癈) . . . . . . . . . . . . . . . . . . . . 260
Exceeding the above specifi cations may result in permanent damage to the device or device malfunction. Operation outside of the parameters
specifi ed in the Electrical Characteristics section is not recommended.
NOTES:
(1) Tested according to JEDEC standard JESD22-A114.
(2) Calculated from package in still air, mounted to 3 x 4.5 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
Unless specifi ed: V
IN
 =12V, T
A
 = +25癈 for Typical, -40 to +85 癈 for Min. and Max., T
J
 < 125癈, V5V = +5V, Typical Application Circuit
Electrical Characteristics
Parameter
Conditions
Min  Typ  Max  Units
Input Supplies
VIN UVLO Threshold
(1)
(not available for V5V < 4.5V)
Sensed at ENL pin, rising edge
2.40   2.60   2.95
V
Sensed at ENL pin, falling edge
2.235   2.40   2.565
VIN UVLO Hysteresis
EN/PSV = High
0.2
V
V5V UVLO Threshold
Measured at V5V pin, rising edge
2.50   2.9    3.0
V
Measured at V5V pin, falling edge
2.40   2.7   2.90
V5V UVLO Hysteresis
0.2
V
VIN Supply Current
ENL, EN/PSV = 0V, V
IN
 = 28V
8.5    20
Standby mode; ENL=V5V, EN/PSV = 0V
130
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