Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - DC/DC voltage regulator Switched-capacitor voltage converter DSBGA 12

LM2757

1 µF

0.47 µF

OUT

1.0 µF

0.47 µF

*Bump D1 is (NC) No Connect

= 3.0V - 5.5V

B2,B3

C1,C2

GND

OUT

= 4.1V (100 mA), 4.5V (110 mA)

5.0V (180 mA)

OUT

LM2757

www.ti.com

SNVS536E –OCTOBER 2007–REVISED MAY 2013

LM2757 Switched Capacitor Boost Regulator with High Impedance Output in Shutdown

Check for Samples: LM2757

FEATURES

DESCRIPTION

The LM2757 is a constant frequency pre-regulated

• Dual Gain Converter (2x, 3/2x) with up to 93%

switched-capacitor charge pump that operates at 1.25

Efficiency.

MHz to produce a low-noise regulated output voltage.

• Inductorless Solution Uses Only 4 Small

The device can be configured to provide up to 100

Ceramic Capacitors.

mA at 4.1V, 110 mA at 4.5V, or 180 mA at 5V.

Excellent efficiency is achieved without the use of an

• Total Solution Area < 12mm

inductor by operating the charge pump in a gain of

• True Input-Output and Output-Input

either 3/2 or 2 according to the input voltage and

Disconnect.

output voltage option selection.

• Up to 180 mA Output Current Capability (5V).

The LM2757 presents a high impedance at the V

OUT

• Selectable 4.1V, 4.5V or 5.0V Output.

pin when shut down. This allows for use in

• Pre-Regulation Minimizes Input Current Ripple.

applications that require the regulated output bus to

be driven by another supply while the LM2757 is shut

• 1.24 MHz Switching Frequency for a Low-

down.

Noise, Low-Ripple Output Voltage.

• Integrated Over Current and Thermal A perfect fit for space-constrained, battery-operated

applications, the LM2757 requires only 4 small,

Shutdown Protection.

inexpensive ceramic capacitors. LM2757 is a tiny 1.2

• Tiny 1.2 mm X 1.6 mm X 0.4 mm Pitch,

mm X 1.6 mm 12–bump DSBGA device. Built in soft-

12–Bump DSBGA Package.

start, over-current protection, and thermal shutdown

features are also included in this device.

APPLICATIONS

• USB/USB-OTG/HDMI Power

• Supercapacitor Charger

• Keypad LED Drive

• Audio Amplifier Power Supply

• Low-Current Camera Flash

• General Purpose Li-Ion-to-5V Conversion

• Cellular Phone SIM cards

Typical Application Circuit

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (21 pages)

PAGE 1
LM2757 www.ti.com SNVS536E – OCTOBER 2007 – REVISED MAY 2013 LM2757 Switched Capacitor Boost Regulator with High Impedance Output in Shutdown Check for Samples: LM2757 FEATURES DESCRIPTION • The LM2757 is a constant frequency pre-regulated switched-capacitor charge pump that operates at 1.25 MHz to produce a low-noise regulated output voltage. The device can be configured to provide up to 100 mA at 4.1V, 110 mA at 4.5V, or 180 mA at 5V.
PAGE 2
LM2757 SNVS536E – OCTOBER 2007 – REVISED MAY 2013 www.ti.com Connection Diagram A1 A2 A3 A3 A2 A1 B1 B2 B3 B3 B2 B1 C1 C2 C3 C3 C2 C1 D1 D2 D3 D3 D2 D1 TOP VIEW (BUMPS FACE DOWN) BOTTOM VIEW (BUMPS FACE UP) Figure 1. 12–Bump DSBGA Package, 0.
PAGE 3
LM2757 www.ti.com SNVS536E – OCTOBER 2007 – REVISED MAY 2013 Absolute Maximum Ratings (1) (2) (3) VIN Pin: Voltage to GND -0.3V to 6.0V M0, M1 pins: Voltage to GND -0.3V to 6.0V Continuous Power Dissipation Internally Limited (4) Junction Temperature (TJ-MAX) 150ºC Storage Temperature Range -65ºC to +150º C Maximum Lead Temperature (Soldering, 10 sec.) 265ºC ESD Rating (5) Human Body Model: (1) (2) (3) (4) (5) 2.
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LM2757 SNVS536E – OCTOBER 2007 – REVISED MAY 2013 www.ti.com Electrical Characteristics (1) (2) Limits in standard typeface are for TA = 25ºC. Limits in boldface type apply over the full operating ambient temperature range (-30°C ≤ TA ≤ +85°C) . Unless otherwise noted, specifications apply to the Typical Application Circuit (pg. 1) with: VIN = 3.6V, V(M0) = 0V, V(M1) = VIN,CIN = C2 = 0.47 µF, CIN= COUT = 1.0 µF (3).
PAGE 5
LM2757 www.ti.com SNVS536E – OCTOBER 2007 – REVISED MAY 2013 Electrical Characteristics (continued) (1) (2) Limits in standard typeface are for TA = 25ºC. Limits in boldface type apply over the full operating ambient temperature range (-30°C ≤ TA ≤ +85°C) . Unless otherwise noted, specifications apply to the Typical Application Circuit (pg. 1) with: VIN = 3.6V, V(M0) = 0V, V(M1) = VIN,CIN = C2 = 0.47 µF, CIN= COUT = 1.0 µF (3).
PAGE 6
LM2757 SNVS536E – OCTOBER 2007 – REVISED MAY 2013 www.ti.com Typical Performance Characteristics Unless otherwise specified: VIN = 3.6V, V(M0) = 0V, V(M1) = VIN, C1 = C2 = 0.47µF, CIN = COUT = 1.0µF, TA = 25ºC. Capacitors are low-ESR multi-layer ceramic capacitors (MLCC's). 6 Efficiency vs. Input Voltage, 5V Mode Efficiency vs. Input Voltage, 4.5V Mode Figure 2. Figure 3. Efficiency vs. Input Voltage, 4.1V Mode Output Voltage vs. Output Current, 5V Mode Figure 4. Figure 5. Output Voltage vs.
PAGE 7
LM2757 www.ti.com SNVS536E – OCTOBER 2007 – REVISED MAY 2013 Typical Performance Characteristics (continued) Unless otherwise specified: VIN = 3.6V, V(M0) = 0V, V(M1) = VIN, C1 = C2 = 0.47µF, CIN = COUT = 1.0µF, TA = 25ºC. Capacitors are low-ESR multi-layer ceramic capacitors (MLCC's). Output Voltage Ripple vs. Output Current, 5V Mode Output Voltage vs. Input Voltage, 5V Mode Figure 8. Figure 9. Output Voltage vs. Input Voltage, 4.5V Mode Output Voltage vs. Input Voltage, 4.1V Mode Figure 10.
PAGE 8
LM2757 SNVS536E – OCTOBER 2007 – REVISED MAY 2013 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified: VIN = 3.6V, V(M0) = 0V, V(M1) = VIN, C1 = C2 = 0.47µF, CIN = COUT = 1.0µF, TA = 25ºC. Capacitors are low-ESR multi-layer ceramic capacitors (MLCC's). Current Limit vs. Input Voltage Oscillator Frequency vs. Input Voltage Figure 14. Figure 15. Operating Current vs. Input Voltage Shutdown Supply Current vs. Input Voltage Figure 16. Figure 17.
PAGE 9
LM2757 www.ti.com SNVS536E – OCTOBER 2007 – REVISED MAY 2013 Typical Performance Characteristics (continued) Unless otherwise specified: VIN = 3.6V, V(M0) = 0V, V(M1) = VIN, C1 = C2 = 0.47µF, CIN = COUT = 1.0µF, TA = 25ºC. Capacitors are low-ESR multi-layer ceramic capacitors (MLCC's).
PAGE 10
LM2757 SNVS536E – OCTOBER 2007 – REVISED MAY 2013 www.ti.com OPERATION DESCRIPTION Overview The LM2757 is a switched capacitor converter that produces a regulated output voltage of either 5V, 4.5V or 4.1V depending on the mode selected. The core of the part is a highly efficient charge pump that utilizes fixed frequency pre-regulation to minimize ripple and power losses over wide input voltage and output current ranges.
PAGE 11
LM2757 www.ti.com SNVS536E – OCTOBER 2007 – REVISED MAY 2013 Shutdown with Output High Impedance The LM2757 is in shutdown mode when there is a logic Low voltage on both mode select pins (M0, M1). There are also 450kΩ pulldown resistors connected to both mode select pins, pulling the nodes down to ground when there is no signal present. When in shutdown, the output of the LM2757 is high impedance, allowing an external supply to drive the output line such as in USB OTG or mobile HDMI applications.
PAGE 12
LM2757 SNVS536E – OCTOBER 2007 – REVISED MAY 2013 www.ti.com The voltage rating of the output capacitor should be 10V or more. For example, a 10V 0603 1.0µF is acceptable for use with the LM2757, as long as the capacitance does not fall below a minimum of 0.5µF in the intended application. All other capacitors should have a voltage rating at or above the maximum input voltage of the application. The capacitors should be selected such that the capacitance on the input does not fall below 0.
PAGE 13
LM2757 www.ti.com SNVS536E – OCTOBER 2007 – REVISED MAY 2013 In typical high-current applications, 0.47µF low-ESR ceramic capacitors are recommended for the flying capacitors. Polarized capacitors (tantalum, aluminum electrolytic, etc.) must not be used for the flying capacitor, as they could become reverse-biased during LM2757 operation.
PAGE 14
LM2757 SNVS536E – OCTOBER 2007 – REVISED MAY 2013 www.ti.com Application Circuits USB OTG / Mobile HDMI Power Supply VBAT (System Voltage) EN (VM1) LM2757 (Host Mode VBUS Power) USB Connector VM0 VOUT / VBUS (5V) VBUS Dual Role Application Processor ID D+ D- USB OTG Transceiver GND The 5V output mode will normally be used for the USB OTG / Mobile HDMI application. Therefore the LM2757 can be enabled/disabled by applying a logic signal on only the M1 pin while grounding the M0 pin.
PAGE 15
LM2757 www.ti.com SNVS536E – OCTOBER 2007 – REVISED MAY 2013 LED Driver VOUT = 4.1V (100 mA), 4.5V (110 mA) 5.0V (180 mA) VBAT M0 M1 LM2757 LED Driver LED(s) D1 DX R R The 5.0V, 4.5V, or the 4.1V mode can be used depending on the forward voltage and load requirements of the LED application. The LM2757 can be enabled/disabled by applying the appropriate combination of logic signals on the M1 and M0 pins.
PAGE 16
LM2757 SNVS536E – OCTOBER 2007 – REVISED MAY 2013 www.ti.com REVISION HISTORY Changes from Revision D (May 2013) to Revision E • 16 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 18
PACKAGE MATERIALS INFORMATION www.ti.com 8-May-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) LM2757TM/NOPB DSBGA YFQ 12 250 178.0 8.4 LM2757TMX/NOPB DSBGA YFQ 12 3000 178.0 8.4 Pack Materials-Page 1 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 1.35 1.75 0.76 4.0 8.0 Q1 1.35 1.75 0.76 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 8-May-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM2757TM/NOPB DSBGA YFQ LM2757TMX/NOPB DSBGA YFQ 12 250 210.0 185.0 35.0 12 3000 210.0 185.0 35.
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MECHANICAL DATA YFQ0012xxx D 0.600 ±0.075 E TMD12XXX (Rev B) D: Max = 1.641 mm, Min =1.581 mm E: Max = 1.248 mm, Min =1.187 mm 4215079/A NOTES: A. All linear dimensions are in millimeters. Dimensioning and tolerancing per ASME Y14.5M-1994. B. This drawing is subject to change without notice. www.ti.
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