SC195F Datasheet, PDF (3/18 Pages) Semtech Corporation – 3.5MHz, 500mA Synchronous Step Down DC-DC Regulator

SC195F
Absolute Maximum Ratings
IN (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3 to +6.0
LX Voltage (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.0 to V_IN +0.5
Other Pins (V). . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to V_IN + 0.3
Output Short Circuit to GND. . . . . . . . . . . . . . . . . Continuous
ESD Protection Level⁽¹⁾ (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5
Recommended Operating Conditions
Input Voltage Range (V). . . . . . . . . . . . . . . . . . . . .+2.9 to +5.5
Thermal Information
Thermal Resistance, Junction to Ambient⁽²⁾ (°C/W). . . . . 116
Junction Temperature Range (°C). . . . . . . . . . . . -40 to +150
Storage Temperature Range (°C). . . . . . . . . . . . . -65 to +150
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: V_IN= 3.6V, C_IN= 4.7µF, C_OUT=10µF, L_X=1µH, V_OUT=2.0V, T_J(MAX)=125°C, T_A= -40 to +85 °C. Typical values are T_A=+25 °C
Parameter
Symbol
Condition
Min
Typ
Max Units
Output Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
Output Current Capability
Current Limit Threshold
Foldback Current Limit
Under-Voltage Lockout
V_OUT
0.8
V_{OUT_TOL}
I_OUT = 200mA
-2.0
ΔV_LINEREG
2.9 ≤ V_IN ≤ 5.5V, I_OUT = 200mA
ΔV_LOADREG
200mA ≤ I_OUT ≤ 500mA
I_OUT
500
I_LIMIT
800
I_{FB_LIM}
I_LOAD > I_LIMIT
V_UVLO
Rising V_IN
Hysteresis
3.3 ⁽¹⁾
V
2.0
%
0.3
%/V
-1
%/A
mA
1300
mA
150
mA
2.9
V
200
mV
Quiescent Current
Shutdown Current
LX Leakage Current
High Side Switch Resistance⁽²⁾
Low Side Switch Resistance⁽³⁾
Switching Frequency
I_Q
I_SD
I_LX
R_{DSON_P}
R_{DSON_N}
f_SW
I_OUT = 0mA
V_{CTL 0-3}= 0V
Into LX pin
I_OUT= 100mA
I_OUT= 100mA
4.8
mA
0.1
1.0
µA
0.1
1.0
µA
250
mΩ
350
2.8
3.5
4.2
MHz
3