SC173MLTRT Semtech, SC173MLTRT Datasheet - Page 3

• Manufacturer Part Number: SC173MLTRT
• Description: IC BUCK SYNC ADJ 3A MLPD-10
• Manufacturer: Semtech
• Series: EcoSpeed™r
• Type: Step-Down (Buck)r

Specifications of SC173MLTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.75 ~ 5.23 V
• Current - Output: 3A
• Frequency - Switching: 200kHz ~ 1MHz
• Voltage - Input: 3 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MLPD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC173MLTR

Absolute Maximum Ratings
LX to GND
VIN to PGND, EN/PSV to AGND ………………… -0.3 to +6.0V
VIN to VDD…………………………………………………+0.3V
BST to LX ………………………………………… -0.3 to +6.0V
BST to PGND……………………………………
VDD to AGND, VOUT to AGND………………… -0.3V to +6.0V
FB, PGOOD, TON …………………………… -0.3 to VDD + 0.3V
AGND to PGND…………………………………
Peak IR Reflow Temperature ……………….…………… 260°C
ESD Protection Level
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) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
(2) Tested according to JEDEC standard JESD22-A114-B
(3) Due to parasitic board inductance, the transient LX pin voltage at the point of measurement may appear larger than that which exists on
Electrical Characteristics
Unless specified: V
© 2010 Semtech Corporation
Parameter
Input Supplies
Controller
VIN, VDD Input Voltage
VDD UVLO Threshold
VDD UVLO Hysteresis
VIN, VDD Supply Current
FB On-Time Threshold
Frequency Programming Range
FB Input Bias Current
silicon. The device is designed to tolerate the short duration transient voltages that will appear on the LX pin due to the deadtime diode
conduction, for inductor currents up to the current limit setting of the device. See application section for details.
(3)
………………………
IN
=5V, T
(2)
………………………………………1kV
A
=+25°C for Typ, -40°C to +85°C for Min and Max, T
- 0.3(DC) to +6.0V(DC) Max
Symbol
-0.3 to +0.3V
Forced Continuous Conduction Mode
-0.3 to +12V
I
OUT
I
=0A, PSAVE, f
OUT
See R
Rising UVLO V
=0A , f
FB=VDD or 0V
Conditions
EN/PSV= 0V
TON
SW
Calculation
Recommended Operating Conditions
Supply Input Voltage……………………………… 3V to 5.5V
Maximum Continuous Output Current …………………… 3A
Thermal Information
Storage Temperature …………………………… -60 to +150°C
Maximum Junction Temperature ……………………… 150°C
Operating Junction Temperature ……………… -40 to +125°C
Thermal Resistance, Junction to Ambient
=500kHz
J
SW
< 125°C
=25kHz
TH
(1)
(1)
0.7425
Min
2.75
100
200
-1
3
1000
Typ
2.90
0.75
200
500
5
(1)
…………
0.7575
Max
1000
2.98
5.5
+1
15
SC173
Units
40°C/W
kHz
mV
μA
μA
V
V
V
3