SMB119N View Datasheet(PDF) - Summit Microelectronics
Part Name
Description
MFG CO.
'SMB119N' PDF : 34 Pages View PDF
SMB119
DC OPERATING CHARACTERISTICS (CONTINUED)
(Over commercial operating conditions, unless otherwise noted. All voltages are relative to GND.)
Channel 4 – 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
FB[4] Pin, VFB = 0.660V,
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
85
93
98
%
11
16
%
100
%
7
11
%
Summit Microelectronics, Inc
10
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