MAX16907 Datasheet, PDF (3/17 Pages) Maxim Integrated Products – 36V, 2.2MHz Step-Down Converter with Low Operating Current

MAX16907
36V, 2.2MHz Step-Down Converter
with Low Operating Current
ELECTRICAL CHARACTERISTICS* (continued)
(V_SUP = V_SUPSW = 14V, V_EN = 14V, C_BIAS = 1FF, R_FOSC = 12kI, T_A = T_J = -40NC to +125NC, unless otherwise noted. Typical values
are at T_A = +25NC.)
PARAMETER
OUTPUT VOLTAGE (OUT)
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Voltage
V_OUT
V_FB = V_BIAS, normal operation
4.925 5 5.075
V
Skip-Mode Output Voltage
Adjustable Output Voltage
Range
V_{OUT_SKIP} No load, V_FB = V_BIAS
4.925 5
5.15
V
V_{OUT_ADJ} FB connected to external resistive divider
1
10
V
Load Regulation
Line Regulation
BST Input Current
LX Current Limit
Skip-Mode Threshold
Spread Spectrum
I_{BST_ON}
I_LX
I_{SKIP_TH}
V_FB = V_BIAS, 30mA < I_LOAD < 3A
V_FB = V_BIAS, 6V < V_SUPSW < 36V
High-side on, V_BST - V_LX = 5V
(Note 2)
Spread spectrum enabled
0.5
%
0.02
%/V
1.5
2.5
mA
3.4
4.1
6
A
300
mA
6
%
Power-Switch On-Resistance
High-Side Switch Leakage
Current
R_ON
R_ON measured between SUPSW and LX,
I_LX = 1A, V_BIAS = 5V
V_SUP = 36V, V_LX = 0V, T_A = +25°C
70
150
mI
1
FA
TRANSCONDUCTANCE AMPLIFIER (COMP)
FB Input Current
I_FB
10
nA
FB Regulation Voltage
V_FB
FB Line Regulation
Transconductance (from FB to
COMP)
Minimum On-Time
DV_LINE
g_m
t_{ON_MIN}
Maximum Duty Cycle
DC_MAX
OSCILLATOR FREQUENCY
Oscillator Frequency
EXTERNAL CLOCK INPUT (FSYNC)
FB connected to an external resistive
divider, 0°C < T_A < +125°C
-40°C < T_A < +125°C
6V < V_SUP < 36V
V_FB = 1V, V_BIAS = 5V (Note 2)
f_SW = 2.2MHz
f_SW = 1MHz
R_FOSC = 12kI
0.99 1.0 1.01
V
0.985 1.0 1.015
0.02
%/V
900
FS
80
ns
98
%
99
2.05 2.20 2.35 MHz
FSYNC Input Current
External Input Clock Acquisition
Time
External Input Clock Frequency
t_FSYNC
T_A = +25°C
(Note 2)
1
f_OSC +
10%
1
FA
Cycles
Hz
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*The parametric values (min, typ, max limits) shown in the Electrical Characteristics table supersede values quoted elsewhere in this data sheet.