SMB118 View Datasheet(PDF) - Summit Microelectronics

Part Name

Description

MFG CO.

SMB118

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

Summit Microelectronics 

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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 3 – Step-down BUCK or Step-up BOOST

VOUT

Voltage (nominal set point, VBATT=4.2V, ILOAD=0A

Buck)

+0.5

+VIN V

VOUT

Voltage (nominal set point, VBATT=4.2V, ILOAD=0A

Boost)

+VIN

+35

V

VFB

Feedback Voltage

Reference range

Programmable in 4mV steps

0

1

V

∆VFB

Feedback Voltage

Reference

FB3 Pin, VFB = 0.656V,

Note 2

-2

+2

%

AVOL

Error amp open loop gain

60

dB

IEA

Error amp output drive

±20

µA

IEAB

Error amp input bias current

9

10

nA

RDRVH

HS Gate drive impedance

(Buck only)

Output High

Output Low

15

Ω

15

Ω

RDRVL

LS Gate drive impedance

Output High

Output Low

15

Ω

15

Ω

D.C. (Boost) Duty Cycle

D.C. (Buck)

Duty Cycle

Maximum, VBATT = 4.2V

Minimum, PWM mode,

VBATT = 4.2V

Maximum, VBATT = 4.2V

Minimum, PWM mode,

VBATT = 4.2V

80

90

98

%

6

10

%

100

%

7

11

%

Summit Microelectronics, Inc

2107 3.0 10/15/2008

12

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