Datasheet

(V
IN
= V
EN
= 14V, I
OUT
= 1mA, C
IN
= 47μF, C
BSOUT
= 22μF, C
OUT
= 10μF, C
VL
= 1μF, T
A
= T
J
= -40°C to +125°C, unless otherwise
noted. See Figures 4–7 as applicable. Typical specifications are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Boost Internal Switch Maximum
On-Time
t
ON-max
1.80 2.25 2.70 µs
Internal Switch Current Limit I
LIM
Measured in steady-state condition 1.5 3.0 A
Boost Turn-On Response Time
Time from V
BSOU
T falling below regulation
to switch on-time
2 5 µs
Internal Diode Forward Voltage
Drop
V
F
MAX5092_ only, I
F
= 1A 0.95 V
LDO
Guaranteed Output Current I
OUT
V
BSOUT
- V
OUT
= 2V (Note 6) 250 mA
Output Voltage V
OUT
SET = SGND,
MAX5092A/
MAX5093A
I
OUT
= 1mA 3.25 3.3 3.35
V
100µA ≤ I
OUT
≤ 250mA 3.2 3.3 3.4
SET = SGND,
MAX5092B/
MAX5093B
I
OUT
= 1mA 4.900 5 5.075
100µA ≤ I
OUT
≤ 250mA 4.85 5 5.10
Minimum Adjustable Output
Voltage
V
ADJMIN
Boost operation, V
IN
= 4V, V
BSOUT
= 7V 1.5 V
Maximum Adjustable Output
Voltage
V
ADJMAX
Boost
operation, V
IN
= 4V
MAX5092_,
V
BSOUT
= 11V
9
V
MAX5093_,
V
BSOUT
= 12V
10
Adjustable Output Voltage V
ADJ
LDO operation, V
IN
≥ V
BST_DIS
(boost converter off) (Note 7)
1.5 10.0 V
Dropout Voltage ∆V
DO
I
OUT
= 250mA (Note 8) 0.9 1.6 V
LDO Startup Response Time
Rising edge of V
BSOUT
to the rising edge
of V
OUT
, R
L
= 500Ω, SET = SGND
200 µs
Line Regulation
∆V
OUT
/
∆V
IN
7V ≤ V
IN
≤
72V,
I
LOAD
= 10mA
MAX5092A/MAX5093A 0.4
mV/V
MAX5092B/MAX5093B 0.5
7V ≤ V
IN
≤ 28V, I
LOAD
= 250mA 1.6
SET Reference Voltage V
SET
1.205 1.235 1.265 V
SET Input Bias Current I
SET
0.5 100 nA
Load Regulation
∆V
OUT
/
∆I
OUT
I
OUT
= 1mA to 250mA 0.2 0.6 mV/mA
Power-Supply Rejection Ratio PSRR
f = 100Hz
I
OUT
= 10mA,
V
BSOUT(AC)
= 500mV
P-P
,
V
OUT
= 5V
80
dB
f = 1MHz
I
OUT
= 10mA,
V
BSOUT(AC)
= 500mV
P-P
,
V
OUT
= 5V
60
Short-Circuit Current I
SC
255 490 mA
MAX5092/MAX5093 4V to 72V Input LDOs with Boost Preregulator
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)