SC197ULTRT Просмотр технического описания (PDF) - Semtech Corporation

Номер в каталоге

Компоненты Описание

производитель

SC197ULTRT

3.5MHz, 500mA Synchronous Dual Step-Down DC-DC Regulator

Semtech Corporation 

SC197

Absolute Maximum Ratings

INA, INB (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0

LXA, LXB Voltage (V) . . . . . . . . . . . . . . . . . . . . . -1.0 to (VIN +0.5)

Other Pins (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3to(VIN+0.3)

Output Short Circuit to GND. . . . . . . . . . . . . . . . . Continuous

ESD Protection Level(1) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5

Recommended Operating Conditions

Ambient Temperature Range (°C). . . . . . . . . . . -40 ≤ TA ≤ +85

Input Voltage (V) . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9 ≤ VIN ≤ 5.5

Thermal Information

Thermal Resistance, Junction to Ambient(2) (°C/W) . . . . 7 7

Storage Temperature Range (°C). . . . . . . . . . . . . -65 to +150

Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . . . +260

Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters

specified 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 per JESD51 standards.

Electrical Characteristics

Unless otherwise specified: VIN= 3.6V, CIN= 4.7µF, COUT=10µF, LX=1µH, VOUT =1.8V, TJ(MAX)=125°C, TA= -40 to +85 °C. Typical values are TA=+25 °C.

All specifications are identical for converters A and B.

Parameter

Symbol(1)

Condition

Min

Typ

Max Units

Output Voltage Range

Output Voltage Tolerance

VOUT

VOUT_TOL

IOUT = 200mA

PSAVE mode

0.8

3.3 (2)

V

-2.0

2.0

%

1.5

Line Regulation

Load Regulation

Output Current Capability

Current Limit Threshold

Foldback Current Limit

Under-Voltage Lockout

ΔVLINEREG

2.9 ≤ VIN ≤ 5.5V, IOUT = 200mA

ΔVLOADREG

200mA ≤ IOUT ≤ 500mA

IOUT

500

ILIMIT

800

IFB_LIM

ILOAD > ILIMIT

VUVLO

Rising VIN

Hysteresis

0.3

%/V

-0.4

%

mA

1300

mA

150

mA

2.9

V

200

mV

Quiescent Current

Shutdown Current

LX Leakage Current

High Side Switch Resistance(3)

Low Side Switch Resistance(4)

IQ

ISD

ILX

RDSON_P

RDSON_N

No switching, IOUT = 0mA

VCTL 0-3= 0V

Into LX pin

IOUT= 100mA

IOUT= 100mA

38

60

µA

0.1

1.0

µA

0.1

1.0

µA

250

mΩ

350



Share Link: