MAX1533A Datasheet, PDF (6/38 Pages) Maxim Integrated Products – High-Efficiency, 5x Output, Main Power-Supply Controllers for Notebook Computers

High-Efficiency, 5x Output, Main Power-Supply
Controllers for Notebook Computers
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V_IN = 12V, both SMPS enabled, V_CC = 5V, FSEL = REF, SKIP = GND, V_{ILIM_} = V_LDO5, V_INA = 15V, V_LDOA = 12V,
I_LDO5 = I_LDO3 = I_LDOA = no load, T_A = 0°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
FSEL Three-Level Input Logic
Input Leakage Current
CSL_ Discharge-Mode
On-Resistance
SYMBOL
CONDITIONS
High
REF
GND
OVP, UVP, SKIP, ONA, ON3, ON5 = GND
or V_CC
SHDN, 0V or 26V
FSEL = GND or V_CC
R_DISCHARGE
MIN TYP
V_CC - 0.2
1.7
-1
-1
-3
10
MAX UNITS
2.3
V
0.4
+1
µA
+1
+3
25
Ω
CSL_ Synchronous-Rectifier
Discharge-Mode Turn-On Level
0.2
0.3
0.4
V
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V_IN = 12V, both SMPS enabled, V_CC = 5V, FSEL = REF, SKIP = GND, V_{ILIM_} = V_LDO5, V_INA = 15V, V_LDOA = 12V,
I_LDO5 = I_LDO3 = I_LDOA = no load, T_A = -40°C to +85°C, unless otherwise noted.) (Note 4)
PARAMETER
INPUT SUPPLIES (Note 1)
V_IN Input Voltage Range
V_IN Operating Supply Current
SYMBOL
CONDITIONS
LDO5 in regulation
V_IN
IN = LDO5, V_OUT5 < 4.4V
I_IN
LDO5 switched over to CSL5,
either SMPS on
MIN
MAX UNITS
6
26
V
4.5
5.5
35
µA
V_IN Standby Supply Current
V_IN Shutdown Supply Current
Quiescent Power Consumption
I_IN(STBY)
I_IN(SHDN)
P_Q
V_IN = 6V to 26V, both SMPS off,
includes I_SHDN
V_IN = 6V to 26V
Both SMPS on, FB3 = FB5 = SKIP = GND,
V_CSL3 = 3.5V, V_CSL5 = 5.3V, V_INA = 15V,
I_LDOA = 0, P_IN + P_CSL3 + P_CSL5 + P_INA
170
µA
17
µA
4.5
mW
V_CC Quiescent Supply Current
MAIN SMPS CONTROLLERS
I_CC
Both SMPS on, FB3 = FB5 = GND,
V_CSL3 = 3.5V, V_CSL5 = 5.3V
2.5
mA
3.3V Output Voltage in
Fixed Mode
5V Output Voltage in Fixed Mode
Feedback Voltage in
Adjustable Mode
V_OUT3 V_IN = 6V to 26V, SKIP = V_CC (Note 2)
V_OUT5 V_IN = 6V to 26V, SKIP = V_CC (Note 2)
V_FB3, V_FB5
V_IN = 6V to 26V, FB3 or FB5,
duty factor = 20% to 80% (Note 2)
3.28
4.975
0.982
3.38
V
5.125
V
1.018
V
Output-Voltage Adjust Range
Either SMPS
1.0
5.5
V
FB3, FB5 Adjustable-Mode
Threshold Voltage
Dual-mode comparator
0.1
0.2
V
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