Datasheet

MAX5060/MAX5061
0.6V to 5.5V Output, Parallelable,
Average-Current-Mode DC-DC Controllers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V, V
DD
= V
CC
(MAX5060 only), T
A
= T
J
= T
MIN
to T
MAX
, unless otherwise noted. Typical specifications are at T
A
= +25°C.)
(Note 1)
PARAMETER SYMBOL CONDITIONS
MIN
TYP
MAX
UNITS
OSCILLATOR
Switching Frequency Range 125
1500
kHz
R
T
= 500kΩ 121
125 129
R
T
= 120kΩ 495
521 547
Switching Frequency f
SW
R
T
= 39.9kΩ
1515 1620 1725
kHz
120kΩ ≤ R
T
≤ 500kΩ -5 +5
Switching Frequency Accuracy
40kΩ ≤ R
T
≤ 120kΩ -8 +8
%
CLKOUT Phase Shift (MAX5060)
φ
CLKOUT
f
SW
= 125kHz
180
degrees
CLKOUT Output Low Level
(MAX5060)
V
CLKOUTL
I
SINK
= 2mA 0.4 V
CLKOUT Output High Level
(MAX5060)
V
CLKOUTH
I
SOURCE
= 2mA 4.5 V
SYNC Input-High Pulse Width t
SYNC
RT/SYNC (MAX5060), RT/SYNC/EN
(MAX5061)
200 ns
SYNC Input Clock High Threshold
V
SYNCH
RT/SYNC (MAX5060), RT/SYNC/EN
(MAX5061)
2.0 V
SYNC Input Clock Low Threshold
V
SYNCL
RT/SYNC (MAX5060), RT/SYNC/EN
(MAX5061)
0.4 V
SYNC Pullup Current I
SYNC
_
OUT
V
RT/SYNC
= 0V (MAX5060),
V
RT/SYNC/EN
= 0V (MAX5061)
250 750
µA
SYNC Power-Off Level V
SYNC
_
OFF
0.4 V
CURRENT LIMIT
Average Current-Limit Threshold
V
CL
CSP to CSN
24.0 26.9 28.2
mV
Reverse Current-Limit Threshold V
CLR
CSP to CSN (MAX5060)
-3.2 -2.3 -0.1
mV
Cycle-by-Cycle Current Limit CSP to CSN 60 mV
Cycle-by-Cycle Overload
Response Time
V
CSP
to V
CSN
= 75mV
260
ns
Hiccup Divider Ratio LIM to V
CM
, no switching
0.547 0.558 0.565
V/V
Hiccup Reset Delay
200
ms
LIM Input Impedance LIM to SGND
55.9
kΩ
CURRENT-SENSE AMPLIFIER
CSP to CSN Input Resistance R
CS
4kΩ
Common-Mode Range V
CMR(CS)
V
IN
= 7V to 28V 0 5.5 V
Input Offset Voltage V
OS(CS)
0.1 mV
Amplifier Gain A
V(CS)
34.5
V/V
3dB Bandwidth f
3dB
4
MHz