MAX5069 Datasheet, PDF (3/19 Pages) Maxim Integrated Products – High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers

High-Frequency, Current-Mode PWM Controller
with Accurate Oscillator and Dual FET Drivers
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = +12V for the MAX5069C/D, V_IN = +23.6V for the MAX5069A/B at startup, then reduces to +12V, C_IN = C_REG5 = 0.1µF,
C_VCC = 1µF, R_RT = 100kΩ, NDRV_ = floating, T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
CS Input Bias Current
CS Blanking Time
I_{B_CL} V_CS = 0V
t_{CS_BLANK}
Propagation Delay from
Comparator Input to NDRV_
t_{PD_CL} 50mV overdrive
IN CLAMP VOLTAGE
IN Clamp Voltage
V_{IN_CLAMP} IN sinking 2mA (Note 2)
ERROR AMPLIFIER (FB, COMP)
Voltage Gain
A_V
R_COMP = 100kΩ to AGND
Unity-Gain Bandwidth
BW
R_COMP = 100kΩ to AGND,
C_LOAD = 100pF to AGND
Phase Margin
PM
R_COMP = 100kΩ to AGND,
C_LOAD = 100pF to AGND
FB Input Offset Voltage
COMP Clamp Voltage
V_{OS_FB}
V_COMP
High
Low
Error-Amplifier Output Current
I_COMP Sinking or sourcing
Reference Voltage
Input Bias Current
COMP Short-Circuit Current
THERMAL SHUTDOWN
V_REF
I_{B_EA}
I_{COMP_SC}
+25°C ≤ T_A ≤ +125°C (Note 3)
-40°C ≤ T_A ≤ +125°C (Note 3)
Thermal-Shutdown Temperature
T_SD
Thermal Hysteresis
T_HYST
OSCILLATOR SYNC INPUT (MAX5069A/D only)
SYNC High-Level Voltage
SYNC Low-Level Voltage
SYNC Input Bias Current
Maximum SYNC Frequency
SYNC High-Level Pulse Width
SYNC Low-Level Pulse Width
DIGITAL SOFT-START
V_{IH_SYNC}
V_{IL_SYNC}
I_{B_SYNC}
f_SYNC
t_{SYNC_HI}
t_{SYNC_LO}
f_OSC = 2.5MHz (Note 4)
Soft-Start Duration
Reference-Voltage Step
t_SS
V_STEP
(Note 5)
Reference-Voltage Steps During
Soft-Start
OSCILLATOR
Oscillator Frequency Range
f_OSC
f_OSC = (10¹¹ / R_RT)
MIN TYP MAX UNITS
0
+2
µA
70
ns
40
ns
24.0 26.0 29.0
V
80
dB
5
MHz
65
Degrees
3
mV
2.6
3.8
V
0.4
1.1
0.5
mA
1.215 1.230 1.245
V
1.205 1.230 1.242
100 300
nA
12
mA
+170
°C
25
°C
2.4
V
0.4
V
10
nA
3.125
MHz
30
ns
30
ns
2047
9.7
127
Cycles
mV
Steps
50
2500 kHz
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