Rainbow Electronics MAX16910 - Manual (Page 9)

200mA, Automotive, Ultra-Low
Quiescent Current, Linear Regulator
MAX16910
_______________________________________________________________________________________ 9
Pin Description
Typical Operating Characteristics (continued)
(V
IN
= V
EN
= +14V, C
IN
= 1µF, C
OUT
= 4.7µF ceramic, T
A
= +25°C, unless otherwise noted.)
ENABLE STARTUP RESPONSE
MAX16910 toc21
5V
0A
V OUT
0V
V IN
3.3V
40Fs/div
ENABLE STARTUP RESPONSE
MAX16910 toc22
5V
0A
V OUT
I OUT
0V
0V
V EN
3.3V
175mA
40Fs/div
LOAD-DUMP TRANSIENT RESPONSE
MAX16910 toc23
14V
V
IN
42V
100ms/div
V OUT
(AC-COUPLED)
100mV/div
PIN NAME FUNCTION
1 IN Regulator Input. Bypass IN to GND with a 1FF (min) low-ESR ceramic capacitor.
2 ENABLE
Active-High Enable Input. Force ENABLE high (or connect to IN) to turn the regulator on. Pull
ENABLE low (or leave unconnected) to place the device in a low-power shutdown mode. ENABLE
is internally pulled down to GND through a 0.65FA current sink.
3 SET
Feedback Network Selector. Connect SET to GND when operating the MAX16910 in fixed output-
voltage mode (3.3V or 5V) using the internal feedback network. Connect SET to IN or any voltage
higher than 2.4V when an external feedback network (resistive divider) is used, operating the
MAX16910 in adjustable output-voltage mode.
4 RESET
Active-Low, Open-Drain Reset Output. RESET asserts low when OUT is below the reset threshold,
and remains low for the duration of the reset timeout period after the reset conditions end. RESET
also asserts low when ENABLE is low and during thermal shutdown.
5 TIMEOUT
Reset-Timeout-Period Adjust Input. Internal capacitance produces a 60Fs default delay when
TIMEOUT is left unconnected. Connect a capacitor from TIMEOUT to GND to set a longer timeout
period than default.
6 SETOV
Regulated Output-Voltage Selector. Connect SETOV to OUT for a 5V fixed output, or connect
SETOV to GND for a 3.3V fixed output. SETOV becomes the feedback path when using an exter-
nal resistive divider for an adjustable output.
7 GND Ground
8 OUT
Regulator Output. Bypass OUT to GND with a minimum of 4.7FF. Use a low-ESR, ceramic capaci-
tor (X7R, X5R) for optimal performance. The SETOV input controls the output voltage when in fixed
+3.3V or fixed +5V output-voltage mode. Using an external resistive divider between OUT and
SETOV sets adjustable output voltage from +1.5V to +11V.
— EP
Exposed Pad. EP is internally connected to GND. Connect EP to the ground plane to provide a
low thermal-resistance path from the thermal junction to the PCB. Do not use EP as the only elec-
trical connection to GND.