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© 2014 Silicon Laboratories, Inc. All rights reserved.

FEATURES

 Combines Low-power Boost + Output Load Switch  Boost Regulator  Input Voltage: 0.6V- 3V  Output Voltage: 1.8V- 3.6V  Efficiency: Up to 84%  No-load Input Current: 3.5µA  Delivers >100mA at 1.8V BO from 1.2VBI  Boost Shutdown Control  No External Schottky Diode Required  Anti-Crush Capability  Prevents Input Voltage Collapse when powered with Weak/High Impedance Power Sources  Single-Inductor, Discontinuous Conduction Mode Scheme with Automatic Peak Current Adjustment  16-Pin, Low-Profile, Thermally-Enhanced 3mm x 3mm TQFN Package

APPLICATIONS

Coin Cell-Powered Portable Equipment Single Cell Li-ion or Alkaline Powered Equipment Solar or Mechanical Energy Harvesting Wireless Microphones Wireless Remote Sensors RFID Tags Blood Glucose Meters Personal Health-Monitoring Devices

DESCRIPTION

The TS3300 is a 1st-generation power management product that combines a high-efficiency boost regulator and an output load switch in one package. The boost regulator operates from a supply voltage as low as 0.6V and can deliver at least 75mA at 1.2V BI to 3VBO, an industry first. The TS3300 includes an anti-crush TM feature to prevent the collapse of the input voltage to the boost regulator when the input is a weak (high impedance) source. If the input voltage drops below a determined voltage threshold (settable by a resistor divider), the boost regulator switching cycles are paused, effectively limiting the minimum input voltage. Anti- crush TM is useful in applications where a buffer capacitor at the boost’s output can service burst loads, and the input sour ce exhibits substantial source impedance (such as an old battery, or at cold temperatures). The TS3300 is fully specified over the -40°C to +85°C temperature range and is available in a low-profile, thermally-enhanced 16-pin 3x3mm TQFN package with an exposed back-side paddle. For best performance, solder the exposed back-side paddle to PCB ground. 0.6-3VIN, 1.8-3.6VOUT, 3.5µA, High-Efficiency Boost + Output Load Switch TYPICAL APPLICATION CIRCUIT Efficiency vs Output Load Current IBO - mA 0.1 0.01 1 10 100 EFFICIENCY - % 100 1.2VBI to 1.8VBO 1.2VBI to 3VBO L: LPS4018-103ML

Page 2 TS3300 Rev. 1.0 ABSOLUTE MAXIMUM RATINGS Continuous Power Dissipation (TA = +70°C) Electrical and thermal 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 condition beyond those indicated in the op erational sections of the specifications is not implied. Exposure to any absolute maximum rating conditions for extended periods may affect device reliability and lifetime. PACKAGE/ORDERING INFORMATION ORDER NUMBER PART MARKING CARRIER QUANTITY TS3300ITQ1633 3300I Tape & Reel ----- TS3300ITQ1633T Tape & Reel 3000 Lead-free Program: Silicon Labs supplies only lead-free packaging. Consult Silicon Labs for products specified with wider operating temperature ranges.

TS3300 Rev. 1.0 Page 3

ELECTRICAL CHARACTERISTICS

VBI = 1.2V, VBO = 3V, VBEN തതതതതതത = GND, IBO= 20mA, L = 10µH, CBI=CBO = 22µF unless otherwise noted. Values are at TA = -40°C to +85°C unless otherwise specified. Typical values are at TA=+25°C unless otherwise specified. Please see Note 1. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Minimum Input Boost Voltage VBI_MIN I BO = 0mA. TA=25ºC 0.6 0.75 V Maximum Input Boost Voltage V BI_MAX Guaranteed by design 3 V Output Boost Voltage Range VBO 1.8 3.6 V No-Load Input Current IQ See Note 2. @ BO 3.5 µA @ BI 0.07 -40°C<TA<+85°C See Note 2. @ BO 6 @ BI 0.9 Active-Mode See Note 3. @ BI 10.8 Output Load-Switch Supply Current I REGIN I REGOUT = 0mA, VREG EN = VREGIN 0.4 1 µA Boost Shutdown Supply Current I SHUTDOWN VBEN തതതതതതത = VBI TA =25°C @ BI 100 nA Boost Feedback Voltage during operation VBO FB Output voltage accuracy: ±4% 0.489 0.505 0.521 V Anti-Crush Feedback Voltage V BI FB V BI ≥ 0.6V 0.363 0.392 0.425 V Anti-Crush Feedback Voltage Hysteresis VBI FB_HYST 50 mV Inductor Peak Current IPK I BO=0mA 365 mA Inductor Valley Current IV 10 mA On Resistance NMOS R ON NMOS 0.27 Ω PMOS RON PMOS 0.48 LOAD SWITCH RON LOAD SWITCH Measured from REGIN to REGOUT. See Note 4. 0.9 1.2 Boost Enable Threshold VBEN തതതതതതത VIL 0.2 V VIH VBI - 0.05 V Boost Enable Hysteresis VBENതതതതതത_HYST 200 mV Output Load Switch Enable Threshold VREG EN VIL (CMOS logic) 0.2 x V REGIN V VIH (CMOS logic) 0.8 x VREGIN Output Load Switch Enable Hysteresis VREG EN_HYST 100 mV BO FB Input Leakage Current I BO FB ±0.1 ±1 nA REGEN Input Leakage Current I REG EN 10 REGFB Input Leakage Current IREG FB ±0.1 ±1 Note 1: All devices are 100% production tested at TA=+25°C and are guaranteed by characterization for TA=-40°C to +85°C, as specified. Note 2: IBO=0mA, VBO FB=0.6V. Note 4: VSW EN=VREGIN=VBO. VREG EN=GND.

Page 4 TS3300 Rev. 1.0 IBO - mA EFFICIENCY - % 0.1 Boost Regulator Efficiency vs Load Current 0.01 1 10 100 VBI - V IBO - mA 120 Boost Regulator Maximum Output Current vs VBI ( for VBO to drop 2.5%) 0.5 1.5 180 2 2.5 240 300 1.2VBI to 1.8VBO 1.2VBI to 3VBO VBO =1.8V VBO =3V 100 L: LPS4018-103ML Inductor Peak Current vs Load Current IBO - mA 25 50 0 75 100 INDUCTOR PEAK CURRENT - A 0.2 0.4 0.5 0.3 0.6 0.8 0.9 0.7 1.1 1.2VBI to 1.8VBO 1.2VBI to 3VBO Boost Minimum Start-Up Voltage vs Load Current START-UP VOLTAGE - V 0.8 1.2 1.4 1.6 1.8 IBO - mA 3 6 0 9 12 15 18 L: 22µH (LPS4018-223ML) TYPICAL PERFORMANCE CHARACTERISTICS VBI = 1.2V, VBO = 3V, VBENതതതതതത = GND, IBO = 0A, L = 10µH (LPS4018-103ML), CBI=CBO = 22µF, VSW EN=VREG FB=VREG EN=VREGIN=VBO, IREGOUT=0A, unless otherwise specified. Values are at TA = 25°C unless otherwise specified. Boost Minimum Start-Up Voltage vs Source Resistance START-UP VOLTAGE - V 0.5 0.7 0.8 0.6 0.9 1.1 1.2 SOURCE RESISTANCE- Ω 5 10 0 15 20 25 30 -40ºC +85ºC +25ºC L: 10µH (LPS4018-103ML)

TS3300 Rev. 1.0 Page 5 VBO – 50mV/DIV 50µs/DIV Boost Regulator Output Voltage Ripple VBI = 1.2V, VBO = 1.8V, CBO= 22µF, IBO = 80mA 50µs/DIV VBO – 50mV/DIV Boost Regulator Output Voltage Ripple VBI = 1.2V, VBO = 1.8V, CBO= 22µF, IBO = 40mA 20µs/DIV VBO – 50mV/DIV Boost Regulator Output Voltage Ripple VBI = 1.2V, VBO = 1.8V, CBO= 22µF, IBO = 5mA Boost Regulator Output Voltage Ripple VBI = 1.2V, VBO = 3V, CBO= 22µF, IBO = 5mA 50µs/DIV VBO – 50mV/DIV TYPICAL PERFORMANCE CHARACTERISTICS VBI = 1.2V, VBO = 3V, VBENതതതതതത = GND, IBO = 0A, L = 10µH (LPS4018-103ML), CBI=CBO = 22µF, VSW EN=VREG FB=VREG EN=VREGIN=VBO, IREGOUT=0A, unless otherwise specified. Values are at TA = 25°C unless otherwise specified. Boost Regulator Output Voltage Ripple VBI = 1.2V, VBO = 3V, CBO= 22µF, IBO = 80mA 50µs/DIV VBO – 50mV/DIV

Page 6 TS3300 Rev. 1.0 2µs/DIV Boost Regulator Output Voltage Ripple, Inductor Current, and LSW Voltage VBI = 1.2V, VBO = 3V, CBO= 22µF, IBO = 40mA VBO 50mV/DIV VLSW 1V/DIV IL 500mA/DIV L: LPS4018-103ML 2µs/DIV Boost Regulator Output Voltage Ripple, Inductor Current, and LSW Voltage VBI = 1.2V, VBO = 1.8V, CBO= 22µF, IBO = 5mA VBO 50mV/DIV VLSW 1V/DIV IL 100mA/DIV L: LPS4018-103ML Boost Regulator Load Step Response VBI = 1.2V, VBO = 3V, CBO= 10µF, IBO = 40mA 200µs/DIV VBO 100mV/DIV IBO 33mA/DIV VBO 100mV/DIV 200µs/DIV Boost Regulator Load Step Response VBI = 1.2V, VBO = 3V, CBO= 10µF, IBO = 5mA IBO 4.17mA/DIV 100ms/DIV Large Output Capacitor Start-up with VANTI-CRUSH TM=0.9V CBO=500µF, RIN =10Ω, CIN=22µF, VBI=1.2V BO 1V/DIV IBI 50mA/DIV TYPICAL PERFORMANCE CHARACTERISTICS VBI = 1.2V, VBO = 3V, VBENതതതതതത = GND, IBO = 0A, L = 10µH (LPS4018-103ML), CBI=CBO = 22µF, VSW EN=VREG FB=VREG EN=VREGIN=VBO, IREGOUT=0A, unless otherwise specified. Values are at TA = 25°C unless otherwise specified.

TS3300 Rev. 1.0 Page 7 PIN FUNCTIONS PIN NAME FUNCTION 1 BI Boost Input. Connect to input source. C BI Connection. 2 CCP Place a 3.3nF capacitor between this pin and GND 3 BENതതതതതത Boost Enable (active low). To enable the TS3300, connect this to GND. To disable the TS3300, set the voltage to greater than VBI – 50mV.

4 BI FB

Boost Input Feedback for Anti-Crush Voltage Setting. The BI FB pin voltage is 392mV. To set the anti-crush voltage, refer to the Applications Information section and to Figure 4. 5 FAC Factory use only. Do not connect to GND or VDD. Leave open. 6 SW EN Connect to REGIN. 7 REG EN Output Load-Switch Lo gic Input Control (active low). 8 REG FB Connect to REGIN. 9 GND Ground. Connect this pin to the analog ground plane. 10 REGOUT Boost Regulator Load-Switch output. 11 REGIN Boost Regulator Load-Switch input. Connect to BO for use. 12 GND Ground. Connect this pin to the analog ground plane.

13 BO FB

Boost Output Feedback. The BO FB pin voltage is 505mV. BO FB coupled with a voltage divider circuit sets the boost regulator output voltage. Refer to Figure 3. 14 BO Regulated output voltage set by resistor network. To set regulated output voltage, refer to Figure 3. CBO connection. 15 LSW Inductor Connection. 16 GND Ground. Connect this pin to the analog ground plane. EP െ For best electrical and thermal performance, connect exposed paddle to GND. BLOCK DIAGRAM

output is within regulation. circuitry starts to operate. quiescent current is achievable this way. connected to the Output Load Switch Input, REGIN. Table 1. Output Load Switch settings Figure 1. Boost + Output Load Switch Circuit Configuration

Silicon Laboratories, Inc. Page 11 400 West Cesar Chavez, Austin, TX 78701 TS3300 Rev. 1.0 +1 (512) 416-8500 ▪ www.silabs.com PACKAGE OUTLINE DRAWING Patent Notice Silicon Labs invests in research and development to help our customers differentiate in the market with innovative low-power, small size, analog-intensive mixed-signal solutions. Silicon Labs' extensive patent portfolio is a testament to our unique approach and world-class engineering team. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where personal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized application, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.

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