TS30111
High Efficiency 700mA Current-Mode
Synchronous Buck DC/DC Regulator, 1MHz
TRIUNE PRODUCTS
Features
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•
•
•
•
•
•
•
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Fixed output voltage choices: 1.5V, 1.8V, 2.5V, 3.3V, and 5V
Adjustable version output voltage range: 0.9V to 5V
Wide input voltage range 4.5V to 16V (18V Abs Max)
1MHz +/- 10% fixed switching frequency
Continuous output current: 700mA
High efficiency – up to 90%
Current mode PWM control with PFM mode for improved
light load efficiency
Voltage supervisor for VOUT reported at the PG pin
Input supply under voltage lockout
Soft start for controlled startup with no overshoot
Full protection for over-current, over-temperature, and
VOUT over-voltage
Less than 10µA in standby mode
Low external component count
Product is lead-free, Halogen Free, RoHS / WEEE compliant
Description
The TS30111 is a DC/DC synchronous switching regulator with
fully integrated power switches, internal compensation, and
full fault protection. The switching frequency of 1MHz enables
the use of small filter components resulting in minimal board
space and reduced BOM costs.
The TS30111 utilizes current mode feedback in normal
regulation PWM mode. When the regulator is placed in
standby (EN is low), the device draws less than 10µA quiescent
current.
The TS30111 integrates a wide range of protection circuitry
including input supply under-voltage lockout, output voltage
soft start, current limit, and thermal shutdown.
The TS30111 includes supervisory reporting through the
PG (Power Good) open drain output to interface other
components in the system.
Summary Specification
•
•
Junction operating temperature -40 °C to 125 °C
Packaged in a 16pin QFN (3x3)
Applications
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On-card switching regulators
Set-top box, DVD, LCD, LED supply
Typical Applications
Adjustable Output
VCC
C
BYPASS
BST
VCC
VSW
C
BST
L
OUT
Fixed Output
VCC
VCC
BST
VOUT
R
TOP
R
BOT
VSW
VOUT
TS30111
FB
VOUT
10 kohm
(optional)
PG
TS30111
C
OUT
FB
VOUT
EN
EN
EN
EN
10 kohm
(optional)
PGND
GND
PGND
GND
PG
PG
PG
TS30111
Final Datasheet
June 13, 2016
Rev 1.2
www.semtech.com
1 of 21
Semtech
Product Ordering Information
Part Number
TS30111-M000QFNR
TS30111-M015QFNR
TS30111-M018QFNR
TS30111-M025QFNR
TS30111-M033QFNR
TS30111-M050QFNR
Description
1MHz Sync Buck, 700mA – Adj V
1MHz Sync Buck, 700mA - 1.5V
1MHz Sync Buck, 700mA - 1.8V
1MHz Sync Buck, 700mA - 2.5V
1MHz Sync Buck, 700mA - 3.3V
1MHz Sync Buck, 700mA – 5.0V
Marking Information
Top Mark : Legend
Line 1
Line 2
Line 3
Logo
30111
•
VL
M
Y
Device Identification
Pin 1 Mark
Voltage Level; 15 =1.5V; 18 = 1.8V; 25 = 2.5V; 33 = 3.3V; 50 = 5.0V; 00 = Adj V
Month Code: Jan – Sept = 1 – 9; Oct = A; Nov = B; Dec = C
Year Code: A = 2011; B = 2012; C = 2013; …
TS30111
Final Datasheet
June 13, 2016
Rev 1.2
www.semtech.com
2 of 21
Semtech
Pinout
PIN 1
VSW
PGND
PGND
VSW
VSW
VSW
VCC
VCC
TS30111
`
VCC
BST
GND
EN
PG
NC
NC
Figure 1: 16 Lead 3x3 QFN, Top View
FB
Pin Description
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
VSW
VCC
VCC
GND
FB
NC
NC
PG
EN
BST
VCC
VSW
VSW
PGND
PGND
VSW
Pin Function
Switching Voltage Node
Input Voltage
Input Voltage
GND
Feedback Input
No Connect
No Connect
Power Good Output
Enable Input
Bootstrap Capacitor
Input Voltage
Switching Voltage Node
Switching Voltage Node
Power GND
Power GND
Switching Voltage Node
Input voltage
Input voltage
Description
Connected to 3.3µH (typical) inductor
Primary ground for the majority of the device except
the low-side power FET
Regulator FB Voltage. Connects to V
OUT
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
Bootstrap capacitor for the high-side FET gate driver.
22nF ceramic capacitor from BST pin to VSW pin
Input Voltage
Connected to 3.3µH (typical) inductor
Connected to 3.3µH (typical) inductor
GND supply for internal low-side FET/integrated diode
GND supply for internal low-side FET/integrated diode
Connected to 3.3µH (typical) inductor
Thermal Characteristics
Package QFN
16 pin
θ
JA
(°C/W) (See Note 4)
50
θ
JC
(°C/W) (See Note 5)
3.9
(4) This assumes a FR4 board only. (5) This assumes a 1 Oz. Copper JEDEC standard board with thermal vias – See Exposed Pad section
and application note for more information.
TS30111
Final Datasheet
June 13, 2016
Rev 1.2
www.semtech.com
3 of 21
Semtech
Functional Block Diagram
PG
EN
4.2V
VCC
MONITOR
&
CONTROL
Under Voltage
Protection
Over & Under
Voltage
Protection
Thermal
Protection
Over Current
Protection
FB
VCC
Bootstrap
Voltage
C
BYPASS
VCC
VCC
VIN
Oscillator
Ramp
Generator
BST
VCC
C
BST
Gate
Drive
Vref
&
Softstart
Σ
Gate Drive
Control
VSW
L
OUT
C
OUT
VOUT
Error Amp
Compensation
Network
Comparator
Vref
Gate
Drive
PGND
R
TOP
PFM Mode
Comparator
FB
R
BOT
GND
Figure 2: TS30111 Block Diagram
PG
V
OUT-UV
EN
Internal
POR
Filter
Filter
ENABLE
REGULATOR
Filter
V
CC-UV
TSD
Filter
V
OUT-OV
I
OCD
Filter
TRISTATE
VSW OUTPUT
Filter
OCD_Filter
Figure 3: Monitor & Control Logic Functionality
TS30111
Final Datasheet
June 13, 2016
Rev 1.2
www.semtech.com
4 of 21
Semtech
Absolute Maximum Ratings
Over operating free–air temperature range unless otherwise noted
(1, 2)
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 18
-0.3 to (VCC+6)
-1 to 18
-0.3 to 6
+/-2k
+/-500
260
Unit
V
V
V
V
V
V
°C
Notes:
(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 con-
ditions” is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.
Thermal Characteristics
Symbol
θ
JA
T
STG
T
J MAX
T
J
Parameter
Thermal Resistance Junction to Air (Note 1)
Storage Temperature Range
Maximum Junction Temperature
Operating Junction Temperature Range
Value
50
-65 to 150
150
-40 to 125
Unit
°C/W
°C
°C
°C
Note 1: Assumes 16LD 3x3 QFN with hi-K JEDEC board and 13.5 inch2 of 1 oz Cu
Recommended Operating Conditions
Symbol
V
CC
C
BST
L
OUT
C
OUT
C
OUT-ESR
C
BYPASS
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)
Min
4.5
17.6
Typ
12
22
3.3
22
Max
16
26.4
Unit
V
nF
µ
H
µ
F
100
mΩ
2
8
10
µ
F
Note 1: For best performance, an inductor with a saturation current rating higher than the maximum V
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 0.1
µ
F ceramic
capacitor should be added in parallel to C
BYPASS
.
TS30111
Final Datasheet
June 13, 2016
Rev 1.2
www.semtech.com
5 of 21
Semtech
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