SMB218 データシートの表示（PDF） - Summit Microelectronics

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SMB218

Six-Channel Programmable DC-DC Power Managers with Battery Charger

Summit Microelectronics 

PLEASE NOTE: The SMB118 has entered End-of-Life.

SMB118/218

DC OPERATING CHARACTERISTICS (CONTINUED)

(Over commercial operating conditions, unless otherwise noted. All voltages are relative to GND.)

Channel 1 – Step-up BOOST

VOUT

Voltage (nominal set point)

VBATT = 4.2V, ILOAD = 0A

VIN

+35

VFB

Feedback Voltage Reference Programmable in 4mV steps

0

1

∆VFB

Feedback Voltage Accuracy

at FB[2:1] Pin (Note 2)

VFB=0.836V

-3

±1

+3

gm

Error amp transconductance

145

IEA

Error amp output drive

±20

0.8

RCS

CS amplifier transresistance RSENSE = 0.1Ω, RLOAD=350mA

1.6

IOL-SEQ

RDRVL

PCHSEQ pull down current

LS Gate drive impedance

VOL-SEQ = 1V

Output High

Output Low

60

100

6.0

2.5

Vcl

Clamp threshold voltage

Programmable 1.0, 1.1, 1.2,

1.5V

1.0

1.5

Vcl_acc

Clamp threshold voltage

Accuracy

Clamp threshold 1.0 and 1.5V

±5

D.C.

Duty Cycle

Maximum (clamp on)

Minimum, PWM mode

85

90

98

16

30

Channel 2 – LDO

VOUT

∆VOUT

∆VLINE

∆VLOAD

Voltage (nominal set point)

Voltage accuracy

Line regulation

Load regulation

LDOIN2=4.2V, ILOAD=0A

LDOIN3=4.2V, ILOAD=0A,

VOUT=2.5V

LDOIN2=4.2V, ILOAD=0A

Vo=2.5, Vin = 4.2V

+1.5

+3.75

-2.5

±0.5

+2.5

1

1

∆VTRANS

PSRR

IOUTMAX

VDO

Load Transient Regulation

Input Ripple Rejection

Maximum output Current

Dropout voltage

Step Load: 5mA to 50mA

COUT = 10uF

LDOIN2=3.8V, VOUT=3.3V

ILOAD=50mA, VP-P=200mV,

F=1kHz

LDOIN2=3.2V, VOUT = 2.5V

ILOAD=50mA

50

45

50

75

150

V

V

%

umho

µA

Ω

µA

Ω

Ω

V

%

%

%

V

%

mV/V

mV/

mA

mV

dB

mA

mV

Summit Microelectronics, Inc

2107 3.0 10/15/2008

10

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