SMB118 SUMMIT Microelectronics, Inc:, SMB118 Datasheet
SMB118
Related parts for SMB118
SMB118 Summary of contents
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... Pushbutton Power Shutdown RESET Output HEALTHY Output Figure 1 – Applications block diagram featuring the SMB118/218 six-channel, programmable DC/DC converters. These integrated power supply and battery managers provide precision regulation, monitoring, cascade sequencing, output margining and battery charging. © SUMMIT Microelectronics, Inc. 2008 ...
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... The SMB118 and SMB218 are equipped with one Boost output that uses a 1MHz oscillator, and an asynchronous topology reducing the necessity for an additional external MOSFET driver. This Boost output also uses an external p-channel sequencing MOSFET to isolate load from the battery when not needed ...
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... SMB118 PACKAGE AND PIN DESCRIPTION nALERT 2 PWR_EN 3 DRVL3 DRVH3 4 VIN3 5 COMPA3 6 PCHSEQ3 7 COMPB3 8 9 HEALTHY PWRFAIL 10 COMP5 11 12 FB5 13 14 Summit Microelectronics, Inc SMB118 48-pad QFN Top view SMB118 7mm x 7mm QFN-48 (Thermal Pad = GND ...
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... FB5 13 14 Summit Microelectronics, Inc SMB218 48-pad QFN Top view SMB218 7mm x 7mm QFN-48 (Thermal Pad = GND 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification TSENSE 35 BSENSE 34 BFETDRV 33 PCHSEQ1 32 COMP1 31 CSL1 30 CSH1 29 FB1 28 DRVL1 27 VBATT ...
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... VUSB Rcsb Battery Pack +3.0V to +4.2V 1-cell Li-Ion 10KΩ NTC +1.5V to 3.75 @ 65mA Figure 2a – Typical application schematic of the SMB118 (QFN-48) showing external circuitry necessary to configure the output channels as: step-up, LDO, step-down outputs and battery charger. Summit Microelectronics, Inc SMB118 VBATT VIN6 SW6 VDDCAP ...
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... DRVL3 BCSH COMPA3 BCSL BSENSE COMPB3 TSENSE PCHSEQ1 DRVL1 LDOIN2 FB1 LDOOUT2 CSH1 CSL1 COMP1 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification +0.5V to VIN7(+2.5V typ) @ 500mA +0.5Vto VIN7(+2.5V typ) @ 500mA +0.5V to VIN7(+2.5V typ) @ 500mA +0.5V to +35V (+5V typ) @ 600mA Buck or Boost Vbatt to +35V (+15V typ) @ 200mA Rsense2 6 ...
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... Voltage on this pin must be greater than DOCK_DC trip point (programmable) for battery charging to be initiated. When voltage is present on DOCK_DC pin the SHDN pin is bypassed. SMB118: Battery/Input Monitor. nBATT_FAULT detects low input voltage. Open- drain active low output. Associated threshold must be set lower than POWER_FAIL threshold. ...
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... Buck converter 4 feedback pin – Connect directly to output Buck converter 4 compensation pin – Connect to R/C compensation network Shutdown – When high this input disables all functions of the SMB118 for low power operation. When voltage is present on the DOCK_DC input the part will exit the shutdown state, regardless of the state of the shutdown input. ...
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... All regulators and monitors enabled – no load 4.2V BATT All regulators disabled, monitors active 4.2V BATT All regulators and monitors disabled All logic derived from this voltage, no load T = 0°C to +70° -40°C to +85°C 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification ) JA Min Typ Max Unit +2.7 +6.0 V +2.7 +6.0 V 2.3 2 ...
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... V =2.5V OUT LDOIN2=4.2V, I =0A LOAD Vo=2.5, Vin = 4.2V Step Load: 5mA to 50mA C = 10uF OUT LDOIN2=3.8V, V =3.3V OUT I =50mA, V =200mV, LOAD P-P F=1kHz LDOIN2=3.2V 2.5V OUT I =50mA LOAD 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification VIN + ± 145 umho ±20 µ 0.8 Ω 1.6 µA 60 100 Ω 6.0 Ω ...
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... L=10uH, F=1MHz Vin=4.2V 3.3V, OUT L=10uH, F=1MHz Programmable in 4mV steps I = 500mA LOAD Output High Output Low Programmable 1.0, 1.1, 1.2, 1.5V Clamp threshold 1.0 and 1.5V Maximum 4.2V BATT Minimum, PWM mode 4.2V BATT 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification +0.5 VIN V ± ± 1200 1100 1150 950 mA 1050 850 950 0 ...
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... Programmable in 4mV steps FB3 Pin 0.656V, FB Note 2 Output High Output Low Output High Output Low Maximum 4.2V BATT Minimum, PWM mode 4.2V BATT Maximum 4.2V BATT Minimum, PWM mode 4.2V BATT 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification +0.5 +VIN V +VIN + ±20 µ Ω 15 Ω ...
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... V = 4.2V FLT VBATT falling FLT FLT_HYST R =0.1Ω, 15mA steps CSB steps steps Adjustable (3 setpoints) Adjustable (3 setpoints) Programmable in 200 mV increments 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification Min Typ Max Unit 5.0 V 2.500 3.200 V ± 250 mA 80 100 120 mA 100 1000 ...
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... CSIR code will result in inaccuracies exceeding those specified above. Note 3: The SMB118 and SMB218 devices are not intended to function as a battery pack protector. Battery packs used in conjunction with these devices need to provide adequate internal protection and to comply with the corresponding battery pack specifications. ...
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... When PWR_EN is programmed as power on pin. Timeout begins after latch is cleared. Timeout begins after fault conditions cleared. Period for which fault must persist before fault triggered actions are taken. Present on all Buck, Boost, and inverting supplies. 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification Min Typ Max 1.5 12.5 sequence ...
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... All voltages are relative to GND.) Symbol Parameter Programmable slew rate SR REF reference Summit Microelectronics, Inc Notes Adjustable slew rate factor proportional to output slew rate. 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification Min Typ Max Unit 400 200 100 66.7 V ...
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... SCL low to valid SDA (cycle n) SCL low (cycle n+1) to SDA change Note 5 Note 5 Noise suppression Configuration registers Memory array HIGH LOW HD:DAT HD:STA t DH 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification 100kHz Min Typ 0 4.7 4.0 4.7 4.7 4.0 4.7 0.2 0.2 250 0 100 t WR (For Write Operation Only) t BUF t ...
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... The SMB118 and SMB218 are equipped with a shutdown pin that disconnects power from the devices and reduces the current consumption to 0.6µA when asserted. When the SHDN pin is pulled high, all outputs will be disabled and the SMB118 and SMB218 will not 2 respond commands. ...
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... The slew rate control can also be disabled on any channel not requiring the feature. DYNAMIC VOLTAGE MANAGEMENT The SMB118 and SMB218 have two additional voltage set points, dynamic voltage control high and low settings. Together with the nominal voltage setting, three pre-determined voltage levels can be used. The three voltage levels are ideal for situations where 50, 100, 200 ms ...
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... Summit Microelectronics, Inc PWREN PIN I2C POWER ASSERTED ON COMMAND BEGIN SEQUENCING SEQUENCE POSITION 1 CURRENT SEQUENCE POSITION POWER ON DELAY CHANNEL CHANNEL NOT ENABLED ENABLED SOFT-START MONITOR ENABLE HIGH VOUT=>UV 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification NEXT SEQUENCE POSITION WAIT FOR ENABLE ENABLE LOW SOFT-START 20 ...
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... The DOCK_DC pin is a power input pin that can be used to power the SMB118 and SMB218, and also to indicate the presence, and level supplemental input like that supplied by a docking station or AC wall adaptor ...
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... BSENSE voltage to decide if trickle charging is required. If the battery voltage is below approximately 2.0V, a charging current of 2mA (typical) is applied on the battery cell. This allows the SMB118 and SMB218 to reset the protection circuit in the battery pack and bring the battery voltage to a higher level without compromising safety ...
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... CHARGE TERMINATION TIMERS There are two timers on the SMB118 and SMB218 used to disable battery charging. The first timer is used to limit the allowable pre-charge duration. This timer begins when trickle charging is completed and ends when fast charging begins ...
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... BATTERY CHARGING ALGORITHM 1000mA 800mA 600mA 400mA 200mA t(precharge) 2500 sec Figure 8 – Battery charging algorithm. Summit Microelectronics, Inc t(charge) 20000 sec 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification ...
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... Fast Charge Mode Regulate Current to Ichg YES NO t(charge) expired? YES NO Vbat t<Vprechg? NO Terminate Charge Iout < I(term)? YES Standby Mode 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification Precharge Mode Regulate Current to Iprechg Vbatt < Vprechg? NO YES t(precharge) expired? YES Battery Fault Terminate Charge NO Vbatt < Vfloat - ...
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... APPLICATIONS INFORMATION (CONTINUED) BUCK CONVERTERS The SMB118 and SMB218 have three synchronous buck converters with integrated p-channel MOSFETS and a driver for an external NFET, see Figure 10. Each channel has an output voltage range from the input supply to approximately 0.5V. VIN SW DRVL PWM FB COMP COMP Figure 10 – ...
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... CSL COMPENSATION FB COMP Figure 11: Boost Channel Summit Microelectronics, Inc BOOST OR BUCK CONTROLLER The SMB118 and SMB218 have one voltage mode output that can be configured as either a boost or a buck controller; see Figures 12 and 13. Boost Sequencing PWM COMP Figure 12 –Buck or boost channel configured as boost ...
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... In addition, the DC bias voltage rating can reduce the measured capacitance by as much as 50% when the voltage is at half of the max rating, make sure to look at the DC bias de-rating curves when selecting a capacitor. 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification ...
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... Compensation: Summit provides a design tool to called Summit Power Designer” compensation values for a design or allow the system to be customized for a particular application. The power designer http://www.summitmicro.com/prod_select/xls/SummitPo werDesigner_Install.zip can ON 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification V − − NFET : − ...
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... SDA 2 1 SCL 2 C serial bus connections to program the SMB118 or SMB218. 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification 2 C serial bus format so that it can be directly Pin 9, 3.3V Pin 10, Reserved Pin 8, Reserved Pin 7, 10V Pin 5, Reserved Pin 6, MR# Pin 4, SDA Pin 3, GND ...
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... The address pointer for the non-volatile configuration registers and memory registers as well as the volatile command and status registers must be set before data During data can be read from the SMB118 and SMB218. This is accomplished by issuing a dummy write command, which is a write command that is not followed by a Stop condition. ...
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... A programming Dongle Slave Address Table 2 - Address bytes used by the SMB118 and SMB218. Summit Microelectronics, Inc (SMX3201) is available from Summit to communicate with the SMB118 and SMB218. The Dongle connects directly to the USB port and programs the device through a cable using the I Figure 14 and the SMX3201 Data Sheet ...
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... Figure 16 – Configuration Register Page Write 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification Data Data ( ...
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... Figure 19 - General Purpose Memory Page Write 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification Bus Address ...
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... Figure 20 - General Purpose Memory Read 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification Bus Address ...
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... PACKAGE Summit Microelectronics, Inc 48 Pad QFN – 7X7 2107 2.4 5/5/2008 SMB118/218 Preliminary Specification 36 ...
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... ORDERING INFORMATION Summit SMB118 Part Number SMB118 or SMB218 Package N = 48-Pad QFN NOTE 1 - This is a Preliminary Datasheet data sheet that describes a Summit that is in pre-production with limited characterization. SUMMIT Microelectronics, Inc. reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability ...