G43G4DG4FG53G20G43G75G72G72G65G6EG74G2DG4DG6FG64G65G20G50G57G4DG20G56G6FG6CG74G61G67G65G20G43G6FG6EG74G72G6FG6CG6CG65G72
G43G6FG70G79G72G69G67G68G74G20 G41G4EG50G45G43G20G45G6CG65G63G74G72G6FG6EG69G63G73G20G43G6FG72G70G2E
G52G65G76G2EG20G41G2EG37G20G2DG20G4AG61G6EG2EG2CG20G32G30G30G33
G41G50G57G33G38G48G43G34G32G41G2FG33G41G2FG34G41G2FG35G41
G77G77G77G2EG61G6EG70G65G63G2EG63G6FG6DG2EG74G77G31
G41G4EG50G45G43G20G72G65G73G65G72G76G65G73G20G74G68G65G20G72G69G67G68G74G20G74G6FG20G6DG61G6BG65G20G63G68G61G6EG67G65G73G20G74G6FG20G69G6DG70G72G6FG76G65G20G72G65G6CG69G61G62G69G6CG69G74G79G20G6FG72G20G6DG61G6EG75G66G61G63G74G75G72G61G62G69G6CG69G74G79G20G77G69G74G68G6FG75G74G20G6EG6FG74G69G63G65G2CG20G61G6EG64G20G61G64G76G69G73G65
G63G75G73G74G6FG6DG65G72G73G20G74G6FG20G6FG62G74G61G69G6EG20G74G68G65G20G6CG61G74G65G73G74G20G76G65G72G73G69G6FG6EG20G6FG66G20G72G65G6CG65G76G61G6EG74G20G69G6EG66G6FG72G6DG61G74G69G6FG6EG20G74G6FG20G76G65G72G69G66G79G20G62G65G66G6FG72G65G20G70G6CG61G63G69G6EG67G20G6FG72G64G65G72G73G2E
G46G65G61G74G75G72G65G73 G47G65G6EG65G72G61G6CG20G44G65G73G63G72G69G70G74G69G6FG6E
The APW38HC4XA family are fixed frequency, high
performance, current-mode PWM controller with 1.2
A drive current capability. Undervoltage lockout cir-
cuitry allows the APW38HC42A and APW38HC44A
versions to start up at 14.5V and operate down to
9V, and the APW38HC43A and APW38HC45A ver-
sions start at 8.4V with operateion down to 7.6V. All
versions operate up to 24V. The ultra low start-up
current 25µA (typical), and operating current 2mA
(typical) have been designed to improve the converter
efficiency. High output driving capability up to 1.2A
ensures the fast switching to minimize the switching
losses. The APW38HC4XA features a trimmed and
temperature compensated oscillator discharge cur-
rent and bandgap reference. APW38HC4XA is avail-
able in both 8-pin plastic DIP and SOP packages.
G41G70G70G6CG69G63G61G74G69G6FG6EG73
• Current-mode , Off-line , Switched-mode Power
Supplies
• Current-mode , DC-to-DC converters
• Various converters ( step-down, step-up, flyback
, forward, and synchronous FET)
G4FG72G64G65G72G69G6EG67G20G61G6EG64G20G4DG61G72G6BG69G6EG67G20G49G6EG66G6FG72G6DG61G74G69G6FG6E
• Ultralow start-up current (25µA typical)
• Low operating current (2mA typical)
• Fast output rise/fall times :
−15ns rise/10ns fall
• High output drive (1.2A peak current)
• CMOS outputs with rail-to-rail swing
• Current-mode operation up to 1MHz
• Trimmed 5V bandgap reference
• Pin-to-pin compatible with MIC38HC4X
• Trimmed oscillator discharge current
• UVLO with hysteresis
• Low cross-conduction currents
APW38HC4XA
Package Code
J : DIP - 8 K : SOP-8
Temp. Range
C : 0 to 70 C I : -40 to 85 C
Handling Code
TU : Tube TR : Tape & Reel
Lead Free Code
L : Lead Free Device Blank : Original Device

°
Handling Code
Temp. Range
Package Code
°
X - 2/3/4/5 XXXXX - Date Code
APW38HC4XA
XXXXX
APW384XA J : APW38HC4XA
XXXXX
APW384XA K : X - 2/3/4/5 XXXXX - Date Code
Lead Free Code
G50G69G6EG20G44G65G73G63G72G69G70G74G69G6FG6E
ISNS
RT/CT
VDD
GND
COMP
FB
OUT
1
2
3
4
VREF
5
6
7
8