MAX1652 Datasheet, PDF (3/28 Pages) Maxim Integrated Products – High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP

High-Efficiency, PWM, Step-Down
DC-DC Controllers in 16-Pin QSOP
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +15V, GND = PGND = 0V, SYNC = REF, I_VL = I_REF = 0A, T_A = 0°C to +85°C, unless otherwise noted.)
PARAMETER
CONDITIONS
Reference Output Voltage
No external load (Note 1)
Reference Fault Lockout Voltage Falling edge
Reference Load Regulation
0 < I_REF < 100µA
CSL, CSH Shutdown Leakage
Current
SHDN = 0V, CSL = 5.5V, CSH = 5.5V, V+ = 0 or 30V,
VL = 0V
V+ Shutdown Current
SHDN = 0V, V+ = 30V, CSL = 0 or 5.5V
V+ Off-State Leakage Current FB = CSH = CSL = 5.5V, VL switched over to CSL
Dropout Power Consumption V+ = 4.5V, CSH = CSL = 4.0V (Note 2)
Quiescent Power Consumption CSH = CSL = 5.5V
OSCILLATOR AND INPUTS/OUTPUTS
Oscillator Frequency
SYNC = REF
SYNC = 0 or 5V
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
Guaranteed by design, not tested
Oscillator Sync Range
Dropout-Mode Maximum Duty
Cycle
SYNC = REF
SYNC = 0 or 5V
Input High Voltage
SYNC
SHDN, SKIP
Input Low Voltage
SYNC
SHDN, SKIP
SHDN, 0 or 30V
SECFB, 0 or 4V
Input Current
SYNC, SKIP
CSH, CSL, CSH = CSL ≤ 4V
FB, FB = REF
DL Sink/Source Current
DL forced to 2V
DH Sink/Source Current
DH forced to 2V, BST - LX = 4.5V
DL On-Resistance
High or low
DH On-Resistance
High or low, BST - LX = 4.5V
MIN TYP MAX UNITS
2.46 2.50 2.54
V
2.0
2.4
V
5
15
mV
0.1
1
µA
3
7
µA
5
15
µA
1
8
mW
1
2
mW
270
300
330
kHz
125
150
175
200
ns
200
ns
200
ns
190
340
kHz
97
98
%
98
99
VL - 0.5
V
2.0
0.8
V
0.5
3.0
0.1
1.0
µA
70
±0.1
1
A
1
A
1.5
5
Ω
1.5
5
Ω
Note 1: Since the reference uses VL as its supply, V+ line-regulation error is insignificant.
Note 2: At very low input voltages, quiescent supply current may increase due to excessive PNP base current in the VL linear
regulator. This occurs if V+ falls below the preset VL regulation point (5V nominal).
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