Fixed output voltage choices: 1.5V, 1.8V, 2.5V, 3.3V, and 5V
with ±2% output tolerance
Adjustable version output voltage range: 0.9V to (VCC -
1V) with ±1.5% reference
Wide input voltage range: 4.5V to 40V (42V Abs Max)
2.2MHz ±10% fixed switching frequency
Continuous output current: 1A for TS30041Q and 2A for
TS30042Q
High efficiency up to 90%
Current mode PWM control with PFM mode for improved
light load efficiency
Voltage supervisor for V
OUT
reporting (Power Good)
Input supply under voltage lockout and soft start
Full protection for over-current, over-temperature, and
V
OUT
over-voltage
SYNC function on EN/SYNC pin to control switching fre-
quency
Less than 10uA in standby mode with low external com-
ponent count
AEC-Q100 Grade-2 qualified
The TS30041Q/42Q utilizes current mode feedback in normal
regulation PWM mode. When the regulator is placed in standby
(EN is low), the device draws less than 10uA quiescent current.
The TS30041Q/42Q integrates a wide range of protection
circuitry including input supply under-voltage lockout, output
voltage soft start, current limit and thermal shutdown.
The TS30041Q/42Q includes supervisory reporting through
the PG (Power Good) open drain output to interface other
components in the system.
Description
The TS30041Q (1A) and TS30042Q (2A) are DC/DC synchronous
switching regulators with fully integrated power switches,
internal compensation and full fault protection. The switching
frequency of 2.2 MHz enables the use of small filter components
resulting in minimal board space and reduced BOM costs.
Summary Specification
■
■
■
Junction operating temperature -40°C to +125°C
Packaged in a 16pin QFN (3x3)
ROHS: “Product is lead-free, Halogen Free, RoHS/WEEE
compliant”
Applications
■
■
Power rails in automotive applications
Industrial power supplies
Typical Application Circuit
TS30041Q/42Q
Final Datasheet
Rev 2.0
www.semtech.com
1
Pin Configuration
Figure 1: 16 Lead 3x3 QFN, Top View
Pin Description
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Symbol Function
VSW
VCC
VCC
GND
FB
NC
NC
PG
EN/SYNC
BST
VCC
VSW
VSW
PGND
PGND
VSW
PAD
Switching Voltage Node
Input Voltage
Input Voltage
GND
Feedback Input
No Connect
No Connect
Power Good Output
Enable & Sync Input
Bootstrap Capacitor
Input Voltage
Switching Voltage Node
Switching Voltage Node
Power GND
Power GND
Switching Voltage Node
Description
Connected to 4.7µH (typical) inductor
Input voltage
Input voltage
Primary ground for the majority of the device except the low-side power FET
Regulator FB Voltage. Connects to VOUT for fixed mode and the output
resistor divider for adjustable mode
Not Connected
Not Connected
Open-drain output
Above 2.2V the device is enabled. GND the pin to put device in standby
mode. Includes internal pull-up. Also used for SYNC function
Bootstrap capacitor for the high-side FET gate driver. A ceramic capacitor in
the range 15 nF - 200 nF from BST pin to VSW pin
Input Voltage
Connected to 4.7µH (typical) inductor
Connected to 4.7µH (typical) inductor
GND supply for internal low-side FET/integrated diode
GND supply for internal low-side FET/integrated diode
Connected to 4.7µH (typical) inductor
Power PAD
Power GND
TS30041Q/42Q
Final Datasheet
Rev 2.0
www.semtech.com
2
Functional Block Diagrams
Figure 2: TS30041Q/42Q Block Diagram
Figure 3: Monitor & Control Logic Functionality
TS30041Q/42Q
Final Datasheet
Rev 2.0
www.semtech.com
3
Absolute Maximum Ratings
Over operating free air temperature range unless otherwise noted
(1,2,3)
Parameter
VCC
BST
VSW
EN, PG, FB
Electrostatic Discharge – Human Body Model
Electrostatic Discharge – Charge Device Model
Lead Temperature (soldering, 10 seconds)
Value
-0.3 to 42
-0.3 to (VCC+6)
-1 to 42
-0.3 to 6
±2k
±500
260
Unit
V
V
V
V
V
V
o
C
Note 1: Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.
Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.
Note 2: All voltage values are with respect to network ground terminal.
Note 3: MOSFETs minimum breakdown voltage is 48V.
Thermal Characteristics
Over operating free–air temperature range unless otherwise noted
(1,2)
Symbol
q
JA
q
JC
T
STG
T
J MAX
T
J
Parameter
Thermal Resistance Junction to Air
(Note 1)
Thermal Resistance Junction to Case
(Note 1)
Storage Temperature Range
Maximum Junction Temperature
Operating Junction Temperature Range
Value
34.5
2.5
-65 to +150
150
-40 to +125
Unit
°C/W
°C/W
°C
°C
°C
Note 1: Assumes 16LD 3x3 QFN with hi-K JEDEC board and 13.5 inch2 of 1 oz Cu and 4 thermal vias connected to PAD.
Recommended Operating Conditions
Symbol
V
CC
C
BST
L
OUT
C
OUT
C
OUT-ESR
C
BYPASS
T
AMBIENT
Parameter
Input Operating Voltage
Bootstrap Capacitor
Output Filter Inductor Typical Value
(Note 1)
Output Filter Capacitor Typical Value
(Note 2)
Output Filter Capacitor ESR
Input Supply Bypass Capacitor Typical Value
(Note 3)
Operating Ambient Temerature Range
Min
4.5
15
3.76
33
2
8
-40
Typ
12
22
4.7
44 (2 x 22)
Max
40
Units
V
nF
µH
µF
200
5.64
100
10
+105
m
W
µF
O
C
Note 1: For best performance, an inductor with a saturation current rating higher than the maximum I
OUT
load requirement plus the inductor current ripple.
Note 2: For best performance, a low ESR ceramic capacitor should be used.
Note 3: For best performance, a low ESR ceramic capacitor should be used. If C
BYPASS
is not a low ESR ceramic capacitor, a 0.1µF ceramic capacitor should
be added in parallel to C
BYPASS
TS30041Q/42Q
Final Datasheet
Rev 2.0
www.semtech.com
4
Electrical Characteristics
Electrical Characteristics, T
J
= -40
o
C to +125
o
C, VCC = 12V (unless otherwise noted)
Parameter
VCC Supply Voltage
Input Supply Voltage
Quiescent current Normal Mode
Quiescent current Normal Mode
– Non-switching
Quiescent current Standby Mode
VCC Under Voltage Lockout
Input Supply Under Voltage Threshold
Input Supply Under Voltage Threshold
Hysteresis
OSC
Oscillator Frequency (Internal)
SYNC Frequency
(1)
PG Open Drain Output
PG Release Timer
High-Level Output Leakage
Low-Level Output Voltage
EN/Sync Input Voltage Thresholds
High Level Input Voltage
Low Level Input Voltage
Input Hysteresis
Input Leakage
Thermal Shutdown
Thermal Shutdown Junction Temperature
TSD Hysteresis
Symbol
Condition
Min
Typ
Max
Units
V
CC
I
CC-NORM
I
CC-NOSWITCH
I
CC-STBY
V
CC
= 12V, I
LOAD
= 0A
V
CC
=12V, I
LOAD
=0A,
Non-switching
V
CC
= 12V, EN = 0V
4.5
5
2.5
6
40
10
V
mA
mA
12
µA
V
CC-UV
V
CC-UV_HYST
V
CC
Increasing
4.3
350
4.5
V
mV
f
OSC
f
SYNC
0.3
2.2
2.2
MHz
MHz
t
PG
I
OH-PG
V
OL-PG
V
PG
= 5V
I
PG
= -0.3mA
10
0.5
0.01
ms
µA
V
V
IH-EN
V
IL-EN
V
HYST-EN
I
IN-EN
V
EN
=5V
V
EN
=0V
2.2
0.8
480
3.5
-1.5
V
V
mV
µA
µA
TSD
TSD
HYST
Note: not tested in production
Note: not tested in production
150
170
10
°C
°C
Note 1: SYNC frequency range is tested with a square wave. Operation with a 200ns minimum high pulse is required.
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