MAX16903SAUE View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX16903SAUE Datasheet PDF : 15 Pages
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MAX16903
2.1MHz, High-Voltage,
1A Mini-Buck Converter
Typical Operating Characteristics (continued)
(VSUP = +14V, TA = +25°C, unless otherwise noted.)
LOAD-TRANSIENT RESPONSE
(SKIP MODE)
MAX16903 toc09
UNDERVOLTAGE PULSE (COLD CRANK)
MAX16903 toc10
STANDBY CURRENT
vs. LOAD CURRENT
500
14V
ILOAD
1A/div
3.5V
450
VSUP
10V/div
400
350
VOUT
5V
200mV/div
AC-
COUPLED
5V
PGOOD
5V/div
ILOAD = 100mA TO 1A TO 100mA
200µs/div
VOUT
300
5V/div
250
200
PGOOD
150
5V/div
100
ILOAD = 500mA
ILOAD
50
1A/div
0
10ms/div
0.01
0.10
1.00
ILOAD (mA)
Pin Configurations
TOP VIEW
BST 1
SUP 2
LX 3
PGND 4
OUTS 5
+
MAX16903
EP
TDFN
10 EN
9 GND
8 BIAS
7 SYNC
6 PGOOD
BST 1
SUP 2
SUP 3
LX 4
LX 5
PGND 6
PGND 7
OUTS 8
+
16 N.C.
15 EN
14 GND
MAX16903 13 BIAS
12 SYNC
11 PGOOD
10 N.C.
EP 9 N.C.
TSSOP
Pin Description
PIN
TDFN TSSOP
1
1
NAME
BST
2
2, 3
SUP
3
4, 5
LX
4
6, 7
PGND
FUNCTION
Bootstrap Capacitor for High-Side Driver (0.1µF)
Voltage Supply Input. Connect a 4.7µF ceramic capacitor from SUP to PGND. Place the
capacitor very close to the SUP pin. For the TSSOP-EP package, connect both SUP pins
together for proper operation.
Buck Switching Node. LX is high impedance when the device is off. For the TSSOP package,
connect both LX pins together for proper operation.
Power Ground. For the TSSOP-EP package, connect both PGND pins together for proper
operation.
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